git.oblomov.eu Git - git/blob - builtin/fetch.c

   1 /*
   2  * "git fetch"
   3  */
   4 #include "cache.h"
   5 #include "config.h"
   6 #include "repository.h"
   7 #include "refs.h"
   8 #include "refspec.h"
   9 #include "object-store.h"
  10 #include "oidset.h"
  11 #include "commit.h"
  12 #include "builtin.h"
  13 #include "string-list.h"
  14 #include "remote.h"
  15 #include "transport.h"
  16 #include "run-command.h"
  17 #include "parse-options.h"
  18 #include "sigchain.h"
  19 #include "submodule-config.h"
  20 #include "submodule.h"
  21 #include "connected.h"
  22 #include "strvec.h"
  23 #include "utf8.h"
  24 #include "packfile.h"
  25 #include "list-objects-filter-options.h"
  26 #include "commit-reach.h"
  27 #include "branch.h"
  28 #include "promisor-remote.h"
  29 #include "commit-graph.h"
  30 #include "shallow.h"
  31
  32 #define FORCED_UPDATES_DELAY_WARNING_IN_MS (10 * 1000)
  33
  34 static const char * const builtin_fetch_usage[] = {
  35         N_("git fetch [<options>] [<repository> [<refspec>...]]"),
  36         N_("git fetch [<options>] <group>"),
  37         N_("git fetch --multiple [<options>] [(<repository> | <group>)...]"),
  38         N_("git fetch --all [<options>]"),
  39         NULL
  40 };
  41
  42 enum {
  43         TAGS_UNSET = 0,
  44         TAGS_DEFAULT = 1,
  45         TAGS_SET = 2
  46 };
  47
  48 static int fetch_prune_config = -1; /* unspecified */
  49 static int fetch_show_forced_updates = 1;
  50 static uint64_t forced_updates_ms = 0;
  51 static int prune = -1; /* unspecified */
  52 #define PRUNE_BY_DEFAULT 0 /* do we prune by default? */
  53
  54 static int fetch_prune_tags_config = -1; /* unspecified */
  55 static int prune_tags = -1; /* unspecified */
  56 #define PRUNE_TAGS_BY_DEFAULT 0 /* do we prune tags by default? */
  57
  58 static int all, append, dry_run, force, keep, multiple, update_head_ok;
  59 static int write_fetch_head = 1;
  60 static int verbosity, deepen_relative, set_upstream;
  61 static int progress = -1;
  62 static int enable_auto_gc = 1;
  63 static int tags = TAGS_DEFAULT, unshallow, update_shallow, deepen;
  64 static int max_jobs = -1, submodule_fetch_jobs_config = -1;
  65 static int fetch_parallel_config = 1;
  66 static enum transport_family family;
  67 static const char *depth;
  68 static const char *deepen_since;
  69 static const char *upload_pack;
  70 static struct string_list deepen_not = STRING_LIST_INIT_NODUP;
  71 static struct strbuf default_rla = STRBUF_INIT;
  72 static struct transport *gtransport;
  73 static struct transport *gsecondary;
  74 static const char *submodule_prefix = "";
  75 static int recurse_submodules = RECURSE_SUBMODULES_DEFAULT;
  76 static int recurse_submodules_default = RECURSE_SUBMODULES_ON_DEMAND;
  77 static int shown_url = 0;
  78 static struct refspec refmap = REFSPEC_INIT_FETCH;
  79 static struct list_objects_filter_options filter_options;
  80 static struct string_list server_options = STRING_LIST_INIT_DUP;
  81 static struct string_list negotiation_tip = STRING_LIST_INIT_NODUP;
  82 static int fetch_write_commit_graph = -1;
  83 static int stdin_refspecs = 0;
  84
  85 static int git_fetch_config(const char *k, const char *v, void *cb)
  86 {
  87         if (!strcmp(k, "fetch.prune")) {
  88                 fetch_prune_config = git_config_bool(k, v);
  89                 return 0;
  90         }
  91
  92         if (!strcmp(k, "fetch.prunetags")) {
  93                 fetch_prune_tags_config = git_config_bool(k, v);
  94                 return 0;
  95         }
  96
  97         if (!strcmp(k, "fetch.showforcedupdates")) {
  98                 fetch_show_forced_updates = git_config_bool(k, v);
  99                 return 0;
 100         }
 101
 102         if (!strcmp(k, "submodule.recurse")) {
 103                 int r = git_config_bool(k, v) ?
 104                         RECURSE_SUBMODULES_ON : RECURSE_SUBMODULES_OFF;
 105                 recurse_submodules = r;
 106         }
 107
 108         if (!strcmp(k, "submodule.fetchjobs")) {
 109                 submodule_fetch_jobs_config = parse_submodule_fetchjobs(k, v);
 110                 return 0;
 111         } else if (!strcmp(k, "fetch.recursesubmodules")) {
 112                 recurse_submodules = parse_fetch_recurse_submodules_arg(k, v);
 113                 return 0;
 114         }
 115
 116         if (!strcmp(k, "fetch.parallel")) {
 117                 fetch_parallel_config = git_config_int(k, v);
 118                 if (fetch_parallel_config < 0)
 119                         die(_("fetch.parallel cannot be negative"));
 120                 return 0;
 121         }
 122
 123         return git_default_config(k, v, cb);
 124 }
 125
 126 static int parse_refmap_arg(const struct option *opt, const char *arg, int unset)
 127 {
 128         BUG_ON_OPT_NEG(unset);
 129
 130         /*
 131          * "git fetch --refmap='' origin foo"
 132          * can be used to tell the command not to store anywhere
 133          */
 134         refspec_append(&refmap, arg);
 135
 136         return 0;
 137 }
 138
 139 static struct option builtin_fetch_options[] = {
 140         OPT__VERBOSITY(&verbosity),
 141         OPT_BOOL(0, "all", &all,
 142                  N_("fetch from all remotes")),
 143         OPT_BOOL(0, "set-upstream", &set_upstream,
 144                  N_("set upstream for git pull/fetch")),
 145         OPT_BOOL('a', "append", &append,
 146                  N_("append to .git/FETCH_HEAD instead of overwriting")),
 147         OPT_STRING(0, "upload-pack", &upload_pack, N_("path"),
 148                    N_("path to upload pack on remote end")),
 149         OPT__FORCE(&force, N_("force overwrite of local reference"), 0),
 150         OPT_BOOL('m', "multiple", &multiple,
 151                  N_("fetch from multiple remotes")),
 152         OPT_SET_INT('t', "tags", &tags,
 153                     N_("fetch all tags and associated objects"), TAGS_SET),
 154         OPT_SET_INT('n', NULL, &tags,
 155                     N_("do not fetch all tags (--no-tags)"), TAGS_UNSET),
 156         OPT_INTEGER('j', "jobs", &max_jobs,
 157                     N_("number of submodules fetched in parallel")),
 158         OPT_BOOL('p', "prune", &prune,
 159                  N_("prune remote-tracking branches no longer on remote")),
 160         OPT_BOOL('P', "prune-tags", &prune_tags,
 161                  N_("prune local tags no longer on remote and clobber changed tags")),
 162         OPT_CALLBACK_F(0, "recurse-submodules", &recurse_submodules, N_("on-demand"),
 163                     N_("control recursive fetching of submodules"),
 164                     PARSE_OPT_OPTARG, option_fetch_parse_recurse_submodules),
 165         OPT_BOOL(0, "dry-run", &dry_run,
 166                  N_("dry run")),
 167         OPT_BOOL(0, "write-fetch-head", &write_fetch_head,
 168                  N_("write fetched references to the FETCH_HEAD file")),
 169         OPT_BOOL('k', "keep", &keep, N_("keep downloaded pack")),
 170         OPT_BOOL('u', "update-head-ok", &update_head_ok,
 171                     N_("allow updating of HEAD ref")),
 172         OPT_BOOL(0, "progress", &progress, N_("force progress reporting")),
 173         OPT_STRING(0, "depth", &depth, N_("depth"),
 174                    N_("deepen history of shallow clone")),
 175         OPT_STRING(0, "shallow-since", &deepen_since, N_("time"),
 176                    N_("deepen history of shallow repository based on time")),
 177         OPT_STRING_LIST(0, "shallow-exclude", &deepen_not, N_("revision"),
 178                         N_("deepen history of shallow clone, excluding rev")),
 179         OPT_INTEGER(0, "deepen", &deepen_relative,
 180                     N_("deepen history of shallow clone")),
 181         OPT_SET_INT_F(0, "unshallow", &unshallow,
 182                       N_("convert to a complete repository"),
 183                       1, PARSE_OPT_NONEG),
 184         { OPTION_STRING, 0, "submodule-prefix", &submodule_prefix, N_("dir"),
 185                    N_("prepend this to submodule path output"), PARSE_OPT_HIDDEN },
 186         OPT_CALLBACK_F(0, "recurse-submodules-default",
 187                    &recurse_submodules_default, N_("on-demand"),
 188                    N_("default for recursive fetching of submodules "
 189                       "(lower priority than config files)"),
 190                    PARSE_OPT_HIDDEN, option_fetch_parse_recurse_submodules),
 191         OPT_BOOL(0, "update-shallow", &update_shallow,
 192                  N_("accept refs that update .git/shallow")),
 193         OPT_CALLBACK_F(0, "refmap", NULL, N_("refmap"),
 194                        N_("specify fetch refmap"), PARSE_OPT_NONEG, parse_refmap_arg),
 195         OPT_STRING_LIST('o', "server-option", &server_options, N_("server-specific"), N_("option to transmit")),
 196         OPT_SET_INT('4', "ipv4", &family, N_("use IPv4 addresses only"),
 197                         TRANSPORT_FAMILY_IPV4),
 198         OPT_SET_INT('6', "ipv6", &family, N_("use IPv6 addresses only"),
 199                         TRANSPORT_FAMILY_IPV6),
 200         OPT_STRING_LIST(0, "negotiation-tip", &negotiation_tip, N_("revision"),
 201                         N_("report that we have only objects reachable from this object")),
 202         OPT_PARSE_LIST_OBJECTS_FILTER(&filter_options),
 203         OPT_BOOL(0, "auto-gc", &enable_auto_gc,
 204                  N_("run 'gc --auto' after fetching")),
 205         OPT_BOOL(0, "show-forced-updates", &fetch_show_forced_updates,
 206                  N_("check for forced-updates on all updated branches")),
 207         OPT_BOOL(0, "write-commit-graph", &fetch_write_commit_graph,
 208                  N_("write the commit-graph after fetching")),
 209         OPT_BOOL(0, "stdin", &stdin_refspecs,
 210                  N_("accept refspecs from stdin")),
 211         OPT_END()
 212 };
 213
 214 static void unlock_pack(void)
 215 {
 216         if (gtransport)
 217                 transport_unlock_pack(gtransport);
 218         if (gsecondary)
 219                 transport_unlock_pack(gsecondary);
 220 }
 221
 222 static void unlock_pack_on_signal(int signo)
 223 {
 224         unlock_pack();
 225         sigchain_pop(signo);
 226         raise(signo);
 227 }
 228
 229 static void add_merge_config(struct ref **head,
 230                            const struct ref *remote_refs,
 231                            struct branch *branch,
 232                            struct ref ***tail)
 233 {
 234         int i;
 235
 236         for (i = 0; i < branch->merge_nr; i++) {
 237                 struct ref *rm, **old_tail = *tail;
 238                 struct refspec_item refspec;
 239
 240                 for (rm = *head; rm; rm = rm->next) {
 241                         if (branch_merge_matches(branch, i, rm->name)) {
 242                                 rm->fetch_head_status = FETCH_HEAD_MERGE;
 243                                 break;
 244                         }
 245                 }
 246                 if (rm)
 247                         continue;
 248
 249                 /*
 250                  * Not fetched to a remote-tracking branch?  We need to fetch
 251                  * it anyway to allow this branch's "branch.$name.merge"
 252                  * to be honored by 'git pull', but we do not have to
 253                  * fail if branch.$name.merge is misconfigured to point
 254                  * at a nonexisting branch.  If we were indeed called by
 255                  * 'git pull', it will notice the misconfiguration because
 256                  * there is no entry in the resulting FETCH_HEAD marked
 257                  * for merging.
 258                  */
 259                 memset(&refspec, 0, sizeof(refspec));
 260                 refspec.src = branch->merge[i]->src;
 261                 get_fetch_map(remote_refs, &refspec, tail, 1);
 262                 for (rm = *old_tail; rm; rm = rm->next)
 263                         rm->fetch_head_status = FETCH_HEAD_MERGE;
 264         }
 265 }
 266
 267 static void create_fetch_oidset(struct ref **head, struct oidset *out)
 268 {
 269         struct ref *rm = *head;
 270         while (rm) {
 271                 oidset_insert(out, &rm->old_oid);
 272                 rm = rm->next;
 273         }
 274 }
 275
 276 struct refname_hash_entry {
 277         struct hashmap_entry ent;
 278         struct object_id oid;
 279         int ignore;
 280         char refname[FLEX_ARRAY];
 281 };
 282
 283 static int refname_hash_entry_cmp(const void *hashmap_cmp_fn_data,
 284                                   const struct hashmap_entry *eptr,
 285                                   const struct hashmap_entry *entry_or_key,
 286                                   const void *keydata)
 287 {
 288         const struct refname_hash_entry *e1, *e2;
 289
 290         e1 = container_of(eptr, const struct refname_hash_entry, ent);
 291         e2 = container_of(entry_or_key, const struct refname_hash_entry, ent);
 292         return strcmp(e1->refname, keydata ? keydata : e2->refname);
 293 }
 294
 295 static struct refname_hash_entry *refname_hash_add(struct hashmap *map,
 296                                                    const char *refname,
 297                                                    const struct object_id *oid)
 298 {
 299         struct refname_hash_entry *ent;
 300         size_t len = strlen(refname);
 301
 302         FLEX_ALLOC_MEM(ent, refname, refname, len);
 303         hashmap_entry_init(&ent->ent, strhash(refname));
 304         oidcpy(&ent->oid, oid);
 305         hashmap_add(map, &ent->ent);
 306         return ent;
 307 }
 308
 309 static int add_one_refname(const char *refname,
 310                            const struct object_id *oid,
 311                            int flag, void *cbdata)
 312 {
 313         struct hashmap *refname_map = cbdata;
 314
 315         (void) refname_hash_add(refname_map, refname, oid);
 316         return 0;
 317 }
 318
 319 static void refname_hash_init(struct hashmap *map)
 320 {
 321         hashmap_init(map, refname_hash_entry_cmp, NULL, 0);
 322 }
 323
 324 static int refname_hash_exists(struct hashmap *map, const char *refname)
 325 {
 326         return !!hashmap_get_from_hash(map, strhash(refname), refname);
 327 }
 328
 329 static void clear_item(struct refname_hash_entry *item)
 330 {
 331         item->ignore = 1;
 332 }
 333
 334 static void find_non_local_tags(const struct ref *refs,
 335                                 struct ref **head,
 336                                 struct ref ***tail)
 337 {
 338         struct hashmap existing_refs;
 339         struct hashmap remote_refs;
 340         struct oidset fetch_oids = OIDSET_INIT;
 341         struct string_list remote_refs_list = STRING_LIST_INIT_NODUP;
 342         struct string_list_item *remote_ref_item;
 343         const struct ref *ref;
 344         struct refname_hash_entry *item = NULL;
 345         const int quick_flags = OBJECT_INFO_QUICK | OBJECT_INFO_SKIP_FETCH_OBJECT;
 346
 347         refname_hash_init(&existing_refs);
 348         refname_hash_init(&remote_refs);
 349         create_fetch_oidset(head, &fetch_oids);
 350
 351         for_each_ref(add_one_refname, &existing_refs);
 352         for (ref = refs; ref; ref = ref->next) {
 353                 if (!starts_with(ref->name, "refs/tags/"))
 354                         continue;
 355
 356                 /*
 357                  * The peeled ref always follows the matching base
 358                  * ref, so if we see a peeled ref that we don't want
 359                  * to fetch then we can mark the ref entry in the list
 360                  * as one to ignore by setting util to NULL.
 361                  */
 362                 if (ends_with(ref->name, "^{}")) {
 363                         if (item &&
 364                             !has_object_file_with_flags(&ref->old_oid, quick_flags) &&
 365                             !oidset_contains(&fetch_oids, &ref->old_oid) &&
 366                             !has_object_file_with_flags(&item->oid, quick_flags) &&
 367                             !oidset_contains(&fetch_oids, &item->oid))
 368                                 clear_item(item);
 369                         item = NULL;
 370                         continue;
 371                 }
 372
 373                 /*
 374                  * If item is non-NULL here, then we previously saw a
 375                  * ref not followed by a peeled reference, so we need
 376                  * to check if it is a lightweight tag that we want to
 377                  * fetch.
 378                  */
 379                 if (item &&
 380                     !has_object_file_with_flags(&item->oid, quick_flags) &&
 381                     !oidset_contains(&fetch_oids, &item->oid))
 382                         clear_item(item);
 383
 384                 item = NULL;
 385
 386                 /* skip duplicates and refs that we already have */
 387                 if (refname_hash_exists(&remote_refs, ref->name) ||
 388                     refname_hash_exists(&existing_refs, ref->name))
 389                         continue;
 390
 391                 item = refname_hash_add(&remote_refs, ref->name, &ref->old_oid);
 392                 string_list_insert(&remote_refs_list, ref->name);
 393         }
 394         hashmap_free_entries(&existing_refs, struct refname_hash_entry, ent);
 395
 396         /*
 397          * We may have a final lightweight tag that needs to be
 398          * checked to see if it needs fetching.
 399          */
 400         if (item &&
 401             !has_object_file_with_flags(&item->oid, quick_flags) &&
 402             !oidset_contains(&fetch_oids, &item->oid))
 403                 clear_item(item);
 404
 405         /*
 406          * For all the tags in the remote_refs_list,
 407          * add them to the list of refs to be fetched
 408          */
 409         for_each_string_list_item(remote_ref_item, &remote_refs_list) {
 410                 const char *refname = remote_ref_item->string;
 411                 struct ref *rm;
 412                 unsigned int hash = strhash(refname);
 413
 414                 item = hashmap_get_entry_from_hash(&remote_refs, hash, refname,
 415                                         struct refname_hash_entry, ent);
 416                 if (!item)
 417                         BUG("unseen remote ref?");
 418
 419                 /* Unless we have already decided to ignore this item... */
 420                 if (item->ignore)
 421                         continue;
 422
 423                 rm = alloc_ref(item->refname);
 424                 rm->peer_ref = alloc_ref(item->refname);
 425                 oidcpy(&rm->old_oid, &item->oid);
 426                 **tail = rm;
 427                 *tail = &rm->next;
 428         }
 429         hashmap_free_entries(&remote_refs, struct refname_hash_entry, ent);
 430         string_list_clear(&remote_refs_list, 0);
 431         oidset_clear(&fetch_oids);
 432 }
 433
 434 static struct ref *get_ref_map(struct remote *remote,
 435                                const struct ref *remote_refs,
 436                                struct refspec *rs,
 437                                int tags, int *autotags)
 438 {
 439         int i;
 440         struct ref *rm;
 441         struct ref *ref_map = NULL;
 442         struct ref **tail = &ref_map;
 443
 444         /* opportunistically-updated references: */
 445         struct ref *orefs = NULL, **oref_tail = &orefs;
 446
 447         struct hashmap existing_refs;
 448         int existing_refs_populated = 0;
 449
 450         if (rs->nr) {
 451                 struct refspec *fetch_refspec;
 452
 453                 for (i = 0; i < rs->nr; i++) {
 454                         get_fetch_map(remote_refs, &rs->items[i], &tail, 0);
 455                         if (rs->items[i].dst && rs->items[i].dst[0])
 456                                 *autotags = 1;
 457                 }
 458                 /* Merge everything on the command line (but not --tags) */
 459                 for (rm = ref_map; rm; rm = rm->next)
 460                         rm->fetch_head_status = FETCH_HEAD_MERGE;
 461
 462                 /*
 463                  * For any refs that we happen to be fetching via
 464                  * command-line arguments, the destination ref might
 465                  * have been missing or have been different than the
 466                  * remote-tracking ref that would be derived from the
 467                  * configured refspec.  In these cases, we want to
 468                  * take the opportunity to update their configured
 469                  * remote-tracking reference.  However, we do not want
 470                  * to mention these entries in FETCH_HEAD at all, as
 471                  * they would simply be duplicates of existing
 472                  * entries, so we set them FETCH_HEAD_IGNORE below.
 473                  *
 474                  * We compute these entries now, based only on the
 475                  * refspecs specified on the command line.  But we add
 476                  * them to the list following the refspecs resulting
 477                  * from the tags option so that one of the latter,
 478                  * which has FETCH_HEAD_NOT_FOR_MERGE, is not removed
 479                  * by ref_remove_duplicates() in favor of one of these
 480                  * opportunistic entries with FETCH_HEAD_IGNORE.
 481                  */
 482                 if (refmap.nr)
 483                         fetch_refspec = &refmap;
 484                 else
 485                         fetch_refspec = &remote->fetch;
 486
 487                 for (i = 0; i < fetch_refspec->nr; i++)
 488                         get_fetch_map(ref_map, &fetch_refspec->items[i], &oref_tail, 1);
 489         } else if (refmap.nr) {
 490                 die("--refmap option is only meaningful with command-line refspec(s).");
 491         } else {
 492                 /* Use the defaults */
 493                 struct branch *branch = branch_get(NULL);
 494                 int has_merge = branch_has_merge_config(branch);
 495                 if (remote &&
 496                     (remote->fetch.nr ||
 497                      /* Note: has_merge implies non-NULL branch->remote_name */
 498                      (has_merge && !strcmp(branch->remote_name, remote->name)))) {
 499                         for (i = 0; i < remote->fetch.nr; i++) {
 500                                 get_fetch_map(remote_refs, &remote->fetch.items[i], &tail, 0);
 501                                 if (remote->fetch.items[i].dst &&
 502                                     remote->fetch.items[i].dst[0])
 503                                         *autotags = 1;
 504                                 if (!i && !has_merge && ref_map &&
 505                                     !remote->fetch.items[0].pattern)
 506                                         ref_map->fetch_head_status = FETCH_HEAD_MERGE;
 507                         }
 508                         /*
 509                          * if the remote we're fetching from is the same
 510                          * as given in branch.<name>.remote, we add the
 511                          * ref given in branch.<name>.merge, too.
 512                          *
 513                          * Note: has_merge implies non-NULL branch->remote_name
 514                          */
 515                         if (has_merge &&
 516                             !strcmp(branch->remote_name, remote->name))
 517                                 add_merge_config(&ref_map, remote_refs, branch, &tail);
 518                 } else {
 519                         ref_map = get_remote_ref(remote_refs, "HEAD");
 520                         if (!ref_map)
 521                                 die(_("Couldn't find remote ref HEAD"));
 522                         ref_map->fetch_head_status = FETCH_HEAD_MERGE;
 523                         tail = &ref_map->next;
 524                 }
 525         }
 526
 527         if (tags == TAGS_SET)
 528                 /* also fetch all tags */
 529                 get_fetch_map(remote_refs, tag_refspec, &tail, 0);
 530         else if (tags == TAGS_DEFAULT && *autotags)
 531                 find_non_local_tags(remote_refs, &ref_map, &tail);
 532
 533         /* Now append any refs to be updated opportunistically: */
 534         *tail = orefs;
 535         for (rm = orefs; rm; rm = rm->next) {
 536                 rm->fetch_head_status = FETCH_HEAD_IGNORE;
 537                 tail = &rm->next;
 538         }
 539
 540         ref_map = ref_remove_duplicates(ref_map);
 541
 542         for (rm = ref_map; rm; rm = rm->next) {
 543                 if (rm->peer_ref) {
 544                         const char *refname = rm->peer_ref->name;
 545                         struct refname_hash_entry *peer_item;
 546                         unsigned int hash = strhash(refname);
 547
 548                         if (!existing_refs_populated) {
 549                                 refname_hash_init(&existing_refs);
 550                                 for_each_ref(add_one_refname, &existing_refs);
 551                                 existing_refs_populated = 1;
 552                         }
 553
 554                         peer_item = hashmap_get_entry_from_hash(&existing_refs,
 555                                                 hash, refname,
 556                                                 struct refname_hash_entry, ent);
 557                         if (peer_item) {
 558                                 struct object_id *old_oid = &peer_item->oid;
 559                                 oidcpy(&rm->peer_ref->old_oid, old_oid);
 560                         }
 561                 }
 562         }
 563         if (existing_refs_populated)
 564                 hashmap_free_entries(&existing_refs, struct refname_hash_entry, ent);
 565
 566         return ref_map;
 567 }
 568
 569 #define STORE_REF_ERROR_OTHER 1
 570 #define STORE_REF_ERROR_DF_CONFLICT 2
 571
 572 static int s_update_ref(const char *action,
 573                         struct ref *ref,
 574                         int check_old)
 575 {
 576         char *msg;
 577         char *rla = getenv("GIT_REFLOG_ACTION");
 578         struct ref_transaction *transaction;
 579         struct strbuf err = STRBUF_INIT;
 580         int ret, df_conflict = 0;
 581
 582         if (dry_run)
 583                 return 0;
 584         if (!rla)
 585                 rla = default_rla.buf;
 586         msg = xstrfmt("%s: %s", rla, action);
 587
 588         transaction = ref_transaction_begin(&err);
 589         if (!transaction ||
 590             ref_transaction_update(transaction, ref->name,
 591                                    &ref->new_oid,
 592                                    check_old ? &ref->old_oid : NULL,
 593                                    0, msg, &err))
 594                 goto fail;
 595
 596         ret = ref_transaction_commit(transaction, &err);
 597         if (ret) {
 598                 df_conflict = (ret == TRANSACTION_NAME_CONFLICT);
 599                 goto fail;
 600         }
 601
 602         ref_transaction_free(transaction);
 603         strbuf_release(&err);
 604         free(msg);
 605         return 0;
 606 fail:
 607         ref_transaction_free(transaction);
 608         error("%s", err.buf);
 609         strbuf_release(&err);
 610         free(msg);
 611         return df_conflict ? STORE_REF_ERROR_DF_CONFLICT
 612                            : STORE_REF_ERROR_OTHER;
 613 }
 614
 615 static int refcol_width = 10;
 616 static int compact_format;
 617
 618 static void adjust_refcol_width(const struct ref *ref)
 619 {
 620         int max, rlen, llen, len;
 621
 622         /* uptodate lines are only shown on high verbosity level */
 623         if (!verbosity && oideq(&ref->peer_ref->old_oid, &ref->old_oid))
 624                 return;
 625
 626         max    = term_columns();
 627         rlen   = utf8_strwidth(prettify_refname(ref->name));
 628
 629         llen   = utf8_strwidth(prettify_refname(ref->peer_ref->name));
 630
 631         /*
 632          * rough estimation to see if the output line is too long and
 633          * should not be counted (we can't do precise calculation
 634          * anyway because we don't know if the error explanation part
 635          * will be printed in update_local_ref)
 636          */
 637         if (compact_format) {
 638                 llen = 0;
 639                 max = max * 2 / 3;
 640         }
 641         len = 21 /* flag and summary */ + rlen + 4 /* -> */ + llen;
 642         if (len >= max)
 643                 return;
 644
 645         /*
 646          * Not precise calculation for compact mode because '*' can
 647          * appear on the left hand side of '->' and shrink the column
 648          * back.
 649          */
 650         if (refcol_width < rlen)
 651                 refcol_width = rlen;
 652 }
 653
 654 static void prepare_format_display(struct ref *ref_map)
 655 {
 656         struct ref *rm;
 657         const char *format = "full";
 658
 659         git_config_get_string_const("fetch.output", &format);
 660         if (!strcasecmp(format, "full"))
 661                 compact_format = 0;
 662         else if (!strcasecmp(format, "compact"))
 663                 compact_format = 1;
 664         else
 665                 die(_("configuration fetch.output contains invalid value %s"),
 666                     format);
 667
 668         for (rm = ref_map; rm; rm = rm->next) {
 669                 if (rm->status == REF_STATUS_REJECT_SHALLOW ||
 670                     !rm->peer_ref ||
 671                     !strcmp(rm->name, "HEAD"))
 672                         continue;
 673
 674                 adjust_refcol_width(rm);
 675         }
 676 }
 677
 678 static void print_remote_to_local(struct strbuf *display,
 679                                   const char *remote, const char *local)
 680 {
 681         strbuf_addf(display, "%-*s -> %s", refcol_width, remote, local);
 682 }
 683
 684 static int find_and_replace(struct strbuf *haystack,
 685                             const char *needle,
 686                             const char *placeholder)
 687 {
 688         const char *p = NULL;
 689         int plen, nlen;
 690
 691         nlen = strlen(needle);
 692         if (ends_with(haystack->buf, needle))
 693                 p = haystack->buf + haystack->len - nlen;
 694         else
 695                 p = strstr(haystack->buf, needle);
 696         if (!p)
 697                 return 0;
 698
 699         if (p > haystack->buf && p[-1] != '/')
 700                 return 0;
 701
 702         plen = strlen(p);
 703         if (plen > nlen && p[nlen] != '/')
 704                 return 0;
 705
 706         strbuf_splice(haystack, p - haystack->buf, nlen,
 707                       placeholder, strlen(placeholder));
 708         return 1;
 709 }
 710
 711 static void print_compact(struct strbuf *display,
 712                           const char *remote, const char *local)
 713 {
 714         struct strbuf r = STRBUF_INIT;
 715         struct strbuf l = STRBUF_INIT;
 716
 717         if (!strcmp(remote, local)) {
 718                 strbuf_addf(display, "%-*s -> *", refcol_width, remote);
 719                 return;
 720         }
 721
 722         strbuf_addstr(&r, remote);
 723         strbuf_addstr(&l, local);
 724
 725         if (!find_and_replace(&r, local, "*"))
 726                 find_and_replace(&l, remote, "*");
 727         print_remote_to_local(display, r.buf, l.buf);
 728
 729         strbuf_release(&r);
 730         strbuf_release(&l);
 731 }
 732
 733 static void format_display(struct strbuf *display, char code,
 734                            const char *summary, const char *error,
 735                            const char *remote, const char *local,
 736                            int summary_width)
 737 {
 738         int width = (summary_width + strlen(summary) - gettext_width(summary));
 739
 740         strbuf_addf(display, "%c %-*s ", code, width, summary);
 741         if (!compact_format)
 742                 print_remote_to_local(display, remote, local);
 743         else
 744                 print_compact(display, remote, local);
 745         if (error)
 746                 strbuf_addf(display, "  (%s)", error);
 747 }
 748
 749 static int update_local_ref(struct ref *ref,
 750                             const char *remote,
 751                             const struct ref *remote_ref,
 752                             struct strbuf *display,
 753                             int summary_width)
 754 {
 755         struct commit *current = NULL, *updated;
 756         enum object_type type;
 757         struct branch *current_branch = branch_get(NULL);
 758         const char *pretty_ref = prettify_refname(ref->name);
 759         int fast_forward = 0;
 760
 761         type = oid_object_info(the_repository, &ref->new_oid, NULL);
 762         if (type < 0)
 763                 die(_("object %s not found"), oid_to_hex(&ref->new_oid));
 764
 765         if (oideq(&ref->old_oid, &ref->new_oid)) {
 766                 if (verbosity > 0)
 767                         format_display(display, '=', _("[up to date]"), NULL,
 768                                        remote, pretty_ref, summary_width);
 769                 return 0;
 770         }
 771
 772         if (current_branch &&
 773             !strcmp(ref->name, current_branch->name) &&
 774             !(update_head_ok || is_bare_repository()) &&
 775             !is_null_oid(&ref->old_oid)) {
 776                 /*
 777                  * If this is the head, and it's not okay to update
 778                  * the head, and the old value of the head isn't empty...
 779                  */
 780                 format_display(display, '!', _("[rejected]"),
 781                                _("can't fetch in current branch"),
 782                                remote, pretty_ref, summary_width);
 783                 return 1;
 784         }
 785
 786         if (!is_null_oid(&ref->old_oid) &&
 787             starts_with(ref->name, "refs/tags/")) {
 788                 if (force || ref->force) {
 789                         int r;
 790                         r = s_update_ref("updating tag", ref, 0);
 791                         format_display(display, r ? '!' : 't', _("[tag update]"),
 792                                        r ? _("unable to update local ref") : NULL,
 793                                        remote, pretty_ref, summary_width);
 794                         return r;
 795                 } else {
 796                         format_display(display, '!', _("[rejected]"), _("would clobber existing tag"),
 797                                        remote, pretty_ref, summary_width);
 798                         return 1;
 799                 }
 800         }
 801
 802         current = lookup_commit_reference_gently(the_repository,
 803                                                  &ref->old_oid, 1);
 804         updated = lookup_commit_reference_gently(the_repository,
 805                                                  &ref->new_oid, 1);
 806         if (!current || !updated) {
 807                 const char *msg;
 808                 const char *what;
 809                 int r;
 810                 /*
 811                  * Nicely describe the new ref we're fetching.
 812                  * Base this on the remote's ref name, as it's
 813                  * more likely to follow a standard layout.
 814                  */
 815                 const char *name = remote_ref ? remote_ref->name : "";
 816                 if (starts_with(name, "refs/tags/")) {
 817                         msg = "storing tag";
 818                         what = _("[new tag]");
 819                 } else if (starts_with(name, "refs/heads/")) {
 820                         msg = "storing head";
 821                         what = _("[new branch]");
 822                 } else {
 823                         msg = "storing ref";
 824                         what = _("[new ref]");
 825                 }
 826
 827                 r = s_update_ref(msg, ref, 0);
 828                 format_display(display, r ? '!' : '*', what,
 829                                r ? _("unable to update local ref") : NULL,
 830                                remote, pretty_ref, summary_width);
 831                 return r;
 832         }
 833
 834         if (fetch_show_forced_updates) {
 835                 uint64_t t_before = getnanotime();
 836                 fast_forward = in_merge_bases(current, updated);
 837                 forced_updates_ms += (getnanotime() - t_before) / 1000000;
 838         } else {
 839                 fast_forward = 1;
 840         }
 841
 842         if (fast_forward) {
 843                 struct strbuf quickref = STRBUF_INIT;
 844                 int r;
 845
 846                 strbuf_add_unique_abbrev(&quickref, &current->object.oid, DEFAULT_ABBREV);
 847                 strbuf_addstr(&quickref, "..");
 848                 strbuf_add_unique_abbrev(&quickref, &ref->new_oid, DEFAULT_ABBREV);
 849                 r = s_update_ref("fast-forward", ref, 1);
 850                 format_display(display, r ? '!' : ' ', quickref.buf,
 851                                r ? _("unable to update local ref") : NULL,
 852                                remote, pretty_ref, summary_width);
 853                 strbuf_release(&quickref);
 854                 return r;
 855         } else if (force || ref->force) {
 856                 struct strbuf quickref = STRBUF_INIT;
 857                 int r;
 858                 strbuf_add_unique_abbrev(&quickref, &current->object.oid, DEFAULT_ABBREV);
 859                 strbuf_addstr(&quickref, "...");
 860                 strbuf_add_unique_abbrev(&quickref, &ref->new_oid, DEFAULT_ABBREV);
 861                 r = s_update_ref("forced-update", ref, 1);
 862                 format_display(display, r ? '!' : '+', quickref.buf,
 863                                r ? _("unable to update local ref") : _("forced update"),
 864                                remote, pretty_ref, summary_width);
 865                 strbuf_release(&quickref);
 866                 return r;
 867         } else {
 868                 format_display(display, '!', _("[rejected]"), _("non-fast-forward"),
 869                                remote, pretty_ref, summary_width);
 870                 return 1;
 871         }
 872 }
 873
 874 static int iterate_ref_map(void *cb_data, struct object_id *oid)
 875 {
 876         struct ref **rm = cb_data;
 877         struct ref *ref = *rm;
 878
 879         while (ref && ref->status == REF_STATUS_REJECT_SHALLOW)
 880                 ref = ref->next;
 881         if (!ref)
 882                 return -1; /* end of the list */
 883         *rm = ref->next;
 884         oidcpy(oid, &ref->old_oid);
 885         return 0;
 886 }
 887
 888 static const char warn_show_forced_updates[] =
 889 N_("Fetch normally indicates which branches had a forced update,\n"
 890    "but that check has been disabled. To re-enable, use '--show-forced-updates'\n"
 891    "flag or run 'git config fetch.showForcedUpdates true'.");
 892 static const char warn_time_show_forced_updates[] =
 893 N_("It took %.2f seconds to check forced updates. You can use\n"
 894    "'--no-show-forced-updates' or run 'git config fetch.showForcedUpdates false'\n"
 895    " to avoid this check.\n");
 896
 897 static int store_updated_refs(const char *raw_url, const char *remote_name,
 898                               int connectivity_checked, struct ref *ref_map)
 899 {
 900         FILE *fp;
 901         struct commit *commit;
 902         int url_len, i, rc = 0;
 903         struct strbuf note = STRBUF_INIT;
 904         const char *what, *kind;
 905         struct ref *rm;
 906         char *url;
 907         const char *filename = (!write_fetch_head
 908                                 ? "/dev/null"
 909                                 : git_path_fetch_head(the_repository));
 910         int want_status;
 911         int summary_width = transport_summary_width(ref_map);
 912
 913         fp = fopen(filename, "a");
 914         if (!fp)
 915                 return error_errno(_("cannot open %s"), filename);
 916
 917         if (raw_url)
 918                 url = transport_anonymize_url(raw_url);
 919         else
 920                 url = xstrdup("foreign");
 921
 922         if (!connectivity_checked) {
 923                 struct check_connected_options opt = CHECK_CONNECTED_INIT;
 924
 925                 rm = ref_map;
 926                 if (check_connected(iterate_ref_map, &rm, &opt)) {
 927                         rc = error(_("%s did not send all necessary objects\n"), url);
 928                         goto abort;
 929                 }
 930         }
 931
 932         prepare_format_display(ref_map);
 933
 934         /*
 935          * We do a pass for each fetch_head_status type in their enum order, so
 936          * merged entries are written before not-for-merge. That lets readers
 937          * use FETCH_HEAD as a refname to refer to the ref to be merged.
 938          */
 939         for (want_status = FETCH_HEAD_MERGE;
 940              want_status <= FETCH_HEAD_IGNORE;
 941              want_status++) {
 942                 for (rm = ref_map; rm; rm = rm->next) {
 943                         struct ref *ref = NULL;
 944                         const char *merge_status_marker = "";
 945
 946                         if (rm->status == REF_STATUS_REJECT_SHALLOW) {
 947                                 if (want_status == FETCH_HEAD_MERGE)
 948                                         warning(_("reject %s because shallow roots are not allowed to be updated"),
 949                                                 rm->peer_ref ? rm->peer_ref->name : rm->name);
 950                                 continue;
 951                         }
 952
 953                         commit = lookup_commit_reference_gently(the_repository,
 954                                                                 &rm->old_oid,
 955                                                                 1);
 956                         if (!commit)
 957                                 rm->fetch_head_status = FETCH_HEAD_NOT_FOR_MERGE;
 958
 959                         if (rm->fetch_head_status != want_status)
 960                                 continue;
 961
 962                         if (rm->peer_ref) {
 963                                 ref = alloc_ref(rm->peer_ref->name);
 964                                 oidcpy(&ref->old_oid, &rm->peer_ref->old_oid);
 965                                 oidcpy(&ref->new_oid, &rm->old_oid);
 966                                 ref->force = rm->peer_ref->force;
 967                         }
 968
 969                         if (recurse_submodules != RECURSE_SUBMODULES_OFF)
 970                                 check_for_new_submodule_commits(&rm->old_oid);
 971
 972                         if (!strcmp(rm->name, "HEAD")) {
 973                                 kind = "";
 974                                 what = "";
 975                         }
 976                         else if (skip_prefix(rm->name, "refs/heads/", &what))
 977                                 kind = "branch";
 978                         else if (skip_prefix(rm->name, "refs/tags/", &what))
 979                                 kind = "tag";
 980                         else if (skip_prefix(rm->name, "refs/remotes/", &what))
 981                                 kind = "remote-tracking branch";
 982                         else {
 983                                 kind = "";
 984                                 what = rm->name;
 985                         }
 986
 987                         url_len = strlen(url);
 988                         for (i = url_len - 1; url[i] == '/' && 0 <= i; i--)
 989                                 ;
 990                         url_len = i + 1;
 991                         if (4 < i && !strncmp(".git", url + i - 3, 4))
 992                                 url_len = i - 3;
 993
 994                         strbuf_reset(&note);
 995                         if (*what) {
 996                                 if (*kind)
 997                                         strbuf_addf(&note, "%s ", kind);
 998                                 strbuf_addf(&note, "'%s' of ", what);
 999                         }
1000                         switch (rm->fetch_head_status) {
1001                         case FETCH_HEAD_NOT_FOR_MERGE:
1002                                 merge_status_marker = "not-for-merge";
1003                                 /* fall-through */
1004                         case FETCH_HEAD_MERGE:
1005                                 fprintf(fp, "%s\t%s\t%s",
1006                                         oid_to_hex(&rm->old_oid),
1007                                         merge_status_marker,
1008                                         note.buf);
1009                                 for (i = 0; i < url_len; ++i)
1010                                         if ('\n' == url[i])
1011                                                 fputs("\\n", fp);
1012                                         else
1013                                                 fputc(url[i], fp);
1014                                 fputc('\n', fp);
1015                                 break;
1016                         default:
1017                                 /* do not write anything to FETCH_HEAD */
1018                                 break;
1019                         }
1020
1021                         strbuf_reset(&note);
1022                         if (ref) {
1023                                 rc |= update_local_ref(ref, what, rm, &note,
1024                                                        summary_width);
1025                                 free(ref);
1026                         } else
1027                                 format_display(&note, '*',
1028                                                *kind ? kind : "branch", NULL,
1029                                                *what ? what : "HEAD",
1030                                                "FETCH_HEAD", summary_width);
1031                         if (note.len) {
1032                                 if (verbosity >= 0 && !shown_url) {
1033                                         fprintf(stderr, _("From %.*s\n"),
1034                                                         url_len, url);
1035                                         shown_url = 1;
1036                                 }
1037                                 if (verbosity >= 0)
1038                                         fprintf(stderr, " %s\n", note.buf);
1039                         }
1040                 }
1041         }
1042
1043         if (rc & STORE_REF_ERROR_DF_CONFLICT)
1044                 error(_("some local refs could not be updated; try running\n"
1045                       " 'git remote prune %s' to remove any old, conflicting "
1046                       "branches"), remote_name);
1047
1048         if (advice_fetch_show_forced_updates) {
1049                 if (!fetch_show_forced_updates) {
1050                         warning(_(warn_show_forced_updates));
1051                 } else if (forced_updates_ms > FORCED_UPDATES_DELAY_WARNING_IN_MS) {
1052                         warning(_(warn_time_show_forced_updates),
1053                                 forced_updates_ms / 1000.0);
1054                 }
1055         }
1056
1057  abort:
1058         strbuf_release(&note);
1059         free(url);
1060         fclose(fp);
1061         return rc;
1062 }
1063
1064 /*
1065  * We would want to bypass the object transfer altogether if
1066  * everything we are going to fetch already exists and is connected
1067  * locally.
1068  */
1069 static int check_exist_and_connected(struct ref *ref_map)
1070 {
1071         struct ref *rm = ref_map;
1072         struct check_connected_options opt = CHECK_CONNECTED_INIT;
1073         struct ref *r;
1074
1075         /*
1076          * If we are deepening a shallow clone we already have these
1077          * objects reachable.  Running rev-list here will return with
1078          * a good (0) exit status and we'll bypass the fetch that we
1079          * really need to perform.  Claiming failure now will ensure
1080          * we perform the network exchange to deepen our history.
1081          */
1082         if (deepen)
1083                 return -1;
1084
1085         /*
1086          * check_connected() allows objects to merely be promised, but
1087          * we need all direct targets to exist.
1088          */
1089         for (r = rm; r; r = r->next) {
1090                 if (!has_object_file_with_flags(&r->old_oid,
1091                                                 OBJECT_INFO_SKIP_FETCH_OBJECT))
1092                         return -1;
1093         }
1094
1095         opt.quiet = 1;
1096         return check_connected(iterate_ref_map, &rm, &opt);
1097 }
1098
1099 static int fetch_refs(struct transport *transport, struct ref *ref_map)
1100 {
1101         int ret = check_exist_and_connected(ref_map);
1102         if (ret) {
1103                 trace2_region_enter("fetch", "fetch_refs", the_repository);
1104                 ret = transport_fetch_refs(transport, ref_map);
1105                 trace2_region_leave("fetch", "fetch_refs", the_repository);
1106         }
1107         if (!ret)
1108                 /*
1109                  * Keep the new pack's ".keep" file around to allow the caller
1110                  * time to update refs to reference the new objects.
1111                  */
1112                 return 0;
1113         transport_unlock_pack(transport);
1114         return ret;
1115 }
1116
1117 /* Update local refs based on the ref values fetched from a remote */
1118 static int consume_refs(struct transport *transport, struct ref *ref_map)
1119 {
1120         int connectivity_checked = transport->smart_options
1121                 ? transport->smart_options->connectivity_checked : 0;
1122         int ret;
1123         trace2_region_enter("fetch", "consume_refs", the_repository);
1124         ret = store_updated_refs(transport->url,
1125                                  transport->remote->name,
1126                                  connectivity_checked,
1127                                  ref_map);
1128         transport_unlock_pack(transport);
1129         trace2_region_leave("fetch", "consume_refs", the_repository);
1130         return ret;
1131 }
1132
1133 static int prune_refs(struct refspec *rs, struct ref *ref_map,
1134                       const char *raw_url)
1135 {
1136         int url_len, i, result = 0;
1137         struct ref *ref, *stale_refs = get_stale_heads(rs, ref_map);
1138         char *url;
1139         int summary_width = transport_summary_width(stale_refs);
1140         const char *dangling_msg = dry_run
1141                 ? _("   (%s will become dangling)")
1142                 : _("   (%s has become dangling)");
1143
1144         if (raw_url)
1145                 url = transport_anonymize_url(raw_url);
1146         else
1147                 url = xstrdup("foreign");
1148
1149         url_len = strlen(url);
1150         for (i = url_len - 1; url[i] == '/' && 0 <= i; i--)
1151                 ;
1152
1153         url_len = i + 1;
1154         if (4 < i && !strncmp(".git", url + i - 3, 4))
1155                 url_len = i - 3;
1156
1157         if (!dry_run) {
1158                 struct string_list refnames = STRING_LIST_INIT_NODUP;
1159
1160                 for (ref = stale_refs; ref; ref = ref->next)
1161                         string_list_append(&refnames, ref->name);
1162
1163                 result = delete_refs("fetch: prune", &refnames, 0);
1164                 string_list_clear(&refnames, 0);
1165         }
1166
1167         if (verbosity >= 0) {
1168                 for (ref = stale_refs; ref; ref = ref->next) {
1169                         struct strbuf sb = STRBUF_INIT;
1170                         if (!shown_url) {
1171                                 fprintf(stderr, _("From %.*s\n"), url_len, url);
1172                                 shown_url = 1;
1173                         }
1174                         format_display(&sb, '-', _("[deleted]"), NULL,
1175                                        _("(none)"), prettify_refname(ref->name),
1176                                        summary_width);
1177                         fprintf(stderr, " %s\n",sb.buf);
1178                         strbuf_release(&sb);
1179                         warn_dangling_symref(stderr, dangling_msg, ref->name);
1180                 }
1181         }
1182
1183         free(url);
1184         free_refs(stale_refs);
1185         return result;
1186 }
1187
1188 static void check_not_current_branch(struct ref *ref_map)
1189 {
1190         struct branch *current_branch = branch_get(NULL);
1191
1192         if (is_bare_repository() || !current_branch)
1193                 return;
1194
1195         for (; ref_map; ref_map = ref_map->next)
1196                 if (ref_map->peer_ref && !strcmp(current_branch->refname,
1197                                         ref_map->peer_ref->name))
1198                         die(_("Refusing to fetch into current branch %s "
1199                             "of non-bare repository"), current_branch->refname);
1200 }
1201
1202 static int truncate_fetch_head(void)
1203 {
1204         const char *filename = git_path_fetch_head(the_repository);
1205         FILE *fp = fopen_for_writing(filename);
1206
1207         if (!fp)
1208                 return error_errno(_("cannot open %s"), filename);
1209         fclose(fp);
1210         return 0;
1211 }
1212
1213 static void set_option(struct transport *transport, const char *name, const char *value)
1214 {
1215         int r = transport_set_option(transport, name, value);
1216         if (r < 0)
1217                 die(_("Option \"%s\" value \"%s\" is not valid for %s"),
1218                     name, value, transport->url);
1219         if (r > 0)
1220                 warning(_("Option \"%s\" is ignored for %s\n"),
1221                         name, transport->url);
1222 }
1223
1224
1225 static int add_oid(const char *refname, const struct object_id *oid, int flags,
1226                    void *cb_data)
1227 {
1228         struct oid_array *oids = cb_data;
1229
1230         oid_array_append(oids, oid);
1231         return 0;
1232 }
1233
1234 static void add_negotiation_tips(struct git_transport_options *smart_options)
1235 {
1236         struct oid_array *oids = xcalloc(1, sizeof(*oids));
1237         int i;
1238
1239         for (i = 0; i < negotiation_tip.nr; i++) {
1240                 const char *s = negotiation_tip.items[i].string;
1241                 int old_nr;
1242                 if (!has_glob_specials(s)) {
1243                         struct object_id oid;
1244                         if (get_oid(s, &oid))
1245                                 die("%s is not a valid object", s);
1246                         oid_array_append(oids, &oid);
1247                         continue;
1248                 }
1249                 old_nr = oids->nr;
1250                 for_each_glob_ref(add_oid, s, oids);
1251                 if (old_nr == oids->nr)
1252                         warning("Ignoring --negotiation-tip=%s because it does not match any refs",
1253                                 s);
1254         }
1255         smart_options->negotiation_tips = oids;
1256 }
1257
1258 static struct transport *prepare_transport(struct remote *remote, int deepen)
1259 {
1260         struct transport *transport;
1261
1262         transport = transport_get(remote, NULL);
1263         transport_set_verbosity(transport, verbosity, progress);
1264         transport->family = family;
1265         if (upload_pack)
1266                 set_option(transport, TRANS_OPT_UPLOADPACK, upload_pack);
1267         if (keep)
1268                 set_option(transport, TRANS_OPT_KEEP, "yes");
1269         if (depth)
1270                 set_option(transport, TRANS_OPT_DEPTH, depth);
1271         if (deepen && deepen_since)
1272                 set_option(transport, TRANS_OPT_DEEPEN_SINCE, deepen_since);
1273         if (deepen && deepen_not.nr)
1274                 set_option(transport, TRANS_OPT_DEEPEN_NOT,
1275                            (const char *)&deepen_not);
1276         if (deepen_relative)
1277                 set_option(transport, TRANS_OPT_DEEPEN_RELATIVE, "yes");
1278         if (update_shallow)
1279                 set_option(transport, TRANS_OPT_UPDATE_SHALLOW, "yes");
1280         if (filter_options.choice) {
1281                 const char *spec =
1282                         expand_list_objects_filter_spec(&filter_options);
1283                 set_option(transport, TRANS_OPT_LIST_OBJECTS_FILTER, spec);
1284                 set_option(transport, TRANS_OPT_FROM_PROMISOR, "1");
1285         }
1286         if (negotiation_tip.nr) {
1287                 if (transport->smart_options)
1288                         add_negotiation_tips(transport->smart_options);
1289                 else
1290                         warning("Ignoring --negotiation-tip because the protocol does not support it.");
1291         }
1292         return transport;
1293 }
1294
1295 static void backfill_tags(struct transport *transport, struct ref *ref_map)
1296 {
1297         int cannot_reuse;
1298
1299         /*
1300          * Once we have set TRANS_OPT_DEEPEN_SINCE, we can't unset it
1301          * when remote helper is used (setting it to an empty string
1302          * is not unsetting). We could extend the remote helper
1303          * protocol for that, but for now, just force a new connection
1304          * without deepen-since. Similar story for deepen-not.
1305          */
1306         cannot_reuse = transport->cannot_reuse ||
1307                 deepen_since || deepen_not.nr;
1308         if (cannot_reuse) {
1309                 gsecondary = prepare_transport(transport->remote, 0);
1310                 transport = gsecondary;
1311         }
1312
1313         transport_set_option(transport, TRANS_OPT_FOLLOWTAGS, NULL);
1314         transport_set_option(transport, TRANS_OPT_DEPTH, "0");
1315         transport_set_option(transport, TRANS_OPT_DEEPEN_RELATIVE, NULL);
1316         if (!fetch_refs(transport, ref_map))
1317                 consume_refs(transport, ref_map);
1318
1319         if (gsecondary) {
1320                 transport_disconnect(gsecondary);
1321                 gsecondary = NULL;
1322         }
1323 }
1324
1325 static int do_fetch(struct transport *transport,
1326                     struct refspec *rs)
1327 {
1328         struct ref *ref_map;
1329         int autotags = (transport->remote->fetch_tags == 1);
1330         int retcode = 0;
1331         const struct ref *remote_refs;
1332         struct strvec ref_prefixes = STRVEC_INIT;
1333         int must_list_refs = 1;
1334
1335         if (tags == TAGS_DEFAULT) {
1336                 if (transport->remote->fetch_tags == 2)
1337                         tags = TAGS_SET;
1338                 if (transport->remote->fetch_tags == -1)
1339                         tags = TAGS_UNSET;
1340         }
1341
1342         /* if not appending, truncate FETCH_HEAD */
1343         if (!append && write_fetch_head) {
1344                 retcode = truncate_fetch_head();
1345                 if (retcode)
1346                         goto cleanup;
1347         }
1348
1349         if (rs->nr) {
1350                 int i;
1351
1352                 refspec_ref_prefixes(rs, &ref_prefixes);
1353
1354                 /*
1355                  * We can avoid listing refs if all of them are exact
1356                  * OIDs
1357                  */
1358                 must_list_refs = 0;
1359                 for (i = 0; i < rs->nr; i++) {
1360                         if (!rs->items[i].exact_sha1) {
1361                                 must_list_refs = 1;
1362                                 break;
1363                         }
1364                 }
1365         } else if (transport->remote && transport->remote->fetch.nr)
1366                 refspec_ref_prefixes(&transport->remote->fetch, &ref_prefixes);
1367
1368         if (tags == TAGS_SET || tags == TAGS_DEFAULT) {
1369                 must_list_refs = 1;
1370                 if (ref_prefixes.nr)
1371                         strvec_push(&ref_prefixes, "refs/tags/");
1372         }
1373
1374         if (must_list_refs) {
1375                 trace2_region_enter("fetch", "remote_refs", the_repository);
1376                 remote_refs = transport_get_remote_refs(transport, &ref_prefixes);
1377                 trace2_region_leave("fetch", "remote_refs", the_repository);
1378         } else
1379                 remote_refs = NULL;
1380
1381         strvec_clear(&ref_prefixes);
1382
1383         ref_map = get_ref_map(transport->remote, remote_refs, rs,
1384                               tags, &autotags);
1385         if (!update_head_ok)
1386                 check_not_current_branch(ref_map);
1387
1388         if (tags == TAGS_DEFAULT && autotags)
1389                 transport_set_option(transport, TRANS_OPT_FOLLOWTAGS, "1");
1390         if (prune) {
1391                 /*
1392                  * We only prune based on refspecs specified
1393                  * explicitly (via command line or configuration); we
1394                  * don't care whether --tags was specified.
1395                  */
1396                 if (rs->nr) {
1397                         prune_refs(rs, ref_map, transport->url);
1398                 } else {
1399                         prune_refs(&transport->remote->fetch,
1400                                    ref_map,
1401                                    transport->url);
1402                 }
1403         }
1404         if (fetch_refs(transport, ref_map) || consume_refs(transport, ref_map)) {
1405                 free_refs(ref_map);
1406                 retcode = 1;
1407                 goto cleanup;
1408         }
1409
1410         if (set_upstream) {
1411                 struct branch *branch = branch_get("HEAD");
1412                 struct ref *rm;
1413                 struct ref *source_ref = NULL;
1414
1415                 /*
1416                  * We're setting the upstream configuration for the
1417                  * current branch. The relevant upstream is the
1418                  * fetched branch that is meant to be merged with the
1419                  * current one, i.e. the one fetched to FETCH_HEAD.
1420                  *
1421                  * When there are several such branches, consider the
1422                  * request ambiguous and err on the safe side by doing
1423                  * nothing and just emit a warning.
1424                  */
1425                 for (rm = ref_map; rm; rm = rm->next) {
1426                         if (!rm->peer_ref) {
1427                                 if (source_ref) {
1428                                         warning(_("multiple branches detected, incompatible with --set-upstream"));
1429                                         goto skip;
1430                                 } else {
1431                                         source_ref = rm;
1432                                 }
1433                         }
1434                 }
1435                 if (source_ref) {
1436                         if (!strcmp(source_ref->name, "HEAD") ||
1437                             starts_with(source_ref->name, "refs/heads/"))
1438                                 install_branch_config(0,
1439                                                       branch->name,
1440                                                       transport->remote->name,
1441                                                       source_ref->name);
1442                         else if (starts_with(source_ref->name, "refs/remotes/"))
1443                                 warning(_("not setting upstream for a remote remote-tracking branch"));
1444                         else if (starts_with(source_ref->name, "refs/tags/"))
1445                                 warning(_("not setting upstream for a remote tag"));
1446                         else
1447                                 warning(_("unknown branch type"));
1448                 } else {
1449                         warning(_("no source branch found.\n"
1450                                 "you need to specify exactly one branch with the --set-upstream option."));
1451                 }
1452         }
1453  skip:
1454         free_refs(ref_map);
1455
1456         /* if neither --no-tags nor --tags was specified, do automated tag
1457          * following ... */
1458         if (tags == TAGS_DEFAULT && autotags) {
1459                 struct ref **tail = &ref_map;
1460                 ref_map = NULL;
1461                 find_non_local_tags(remote_refs, &ref_map, &tail);
1462                 if (ref_map)
1463                         backfill_tags(transport, ref_map);
1464                 free_refs(ref_map);
1465         }
1466
1467  cleanup:
1468         return retcode;
1469 }
1470
1471 static int get_one_remote_for_fetch(struct remote *remote, void *priv)
1472 {
1473         struct string_list *list = priv;
1474         if (!remote->skip_default_update)
1475                 string_list_append(list, remote->name);
1476         return 0;
1477 }
1478
1479 struct remote_group_data {
1480         const char *name;
1481         struct string_list *list;
1482 };
1483
1484 static int get_remote_group(const char *key, const char *value, void *priv)
1485 {
1486         struct remote_group_data *g = priv;
1487
1488         if (skip_prefix(key, "remotes.", &key) && !strcmp(key, g->name)) {
1489                 /* split list by white space */
1490                 while (*value) {
1491                         size_t wordlen = strcspn(value, " \t\n");
1492
1493                         if (wordlen >= 1)
1494                                 string_list_append_nodup(g->list,
1495                                                    xstrndup(value, wordlen));
1496                         value += wordlen + (value[wordlen] != '\0');
1497                 }
1498         }
1499
1500         return 0;
1501 }
1502
1503 static int add_remote_or_group(const char *name, struct string_list *list)
1504 {
1505         int prev_nr = list->nr;
1506         struct remote_group_data g;
1507         g.name = name; g.list = list;
1508
1509         git_config(get_remote_group, &g);
1510         if (list->nr == prev_nr) {
1511                 struct remote *remote = remote_get(name);
1512                 if (!remote_is_configured(remote, 0))
1513                         return 0;
1514                 string_list_append(list, remote->name);
1515         }
1516         return 1;
1517 }
1518
1519 static void add_options_to_argv(struct strvec *argv)
1520 {
1521         if (dry_run)
1522                 strvec_push(argv, "--dry-run");
1523         if (prune != -1)
1524                 strvec_push(argv, prune ? "--prune" : "--no-prune");
1525         if (prune_tags != -1)
1526                 strvec_push(argv, prune_tags ? "--prune-tags" : "--no-prune-tags");
1527         if (update_head_ok)
1528                 strvec_push(argv, "--update-head-ok");
1529         if (force)
1530                 strvec_push(argv, "--force");
1531         if (keep)
1532                 strvec_push(argv, "--keep");
1533         if (recurse_submodules == RECURSE_SUBMODULES_ON)
1534                 strvec_push(argv, "--recurse-submodules");
1535         else if (recurse_submodules == RECURSE_SUBMODULES_ON_DEMAND)
1536                 strvec_push(argv, "--recurse-submodules=on-demand");
1537         if (tags == TAGS_SET)
1538                 strvec_push(argv, "--tags");
1539         else if (tags == TAGS_UNSET)
1540                 strvec_push(argv, "--no-tags");
1541         if (verbosity >= 2)
1542                 strvec_push(argv, "-v");
1543         if (verbosity >= 1)
1544                 strvec_push(argv, "-v");
1545         else if (verbosity < 0)
1546                 strvec_push(argv, "-q");
1547
1548 }
1549
1550 /* Fetch multiple remotes in parallel */
1551
1552 struct parallel_fetch_state {
1553         const char **argv;
1554         struct string_list *remotes;
1555         int next, result;
1556 };
1557
1558 static int fetch_next_remote(struct child_process *cp, struct strbuf *out,
1559                              void *cb, void **task_cb)
1560 {
1561         struct parallel_fetch_state *state = cb;
1562         char *remote;
1563
1564         if (state->next < 0 || state->next >= state->remotes->nr)
1565                 return 0;
1566
1567         remote = state->remotes->items[state->next++].string;
1568         *task_cb = remote;
1569
1570         strvec_pushv(&cp->args, state->argv);
1571         strvec_push(&cp->args, remote);
1572         cp->git_cmd = 1;
1573
1574         if (verbosity >= 0)
1575                 printf(_("Fetching %s\n"), remote);
1576
1577         return 1;
1578 }
1579
1580 static int fetch_failed_to_start(struct strbuf *out, void *cb, void *task_cb)
1581 {
1582         struct parallel_fetch_state *state = cb;
1583         const char *remote = task_cb;
1584
1585         state->result = error(_("Could not fetch %s"), remote);
1586
1587         return 0;
1588 }
1589
1590 static int fetch_finished(int result, struct strbuf *out,
1591                           void *cb, void *task_cb)
1592 {
1593         struct parallel_fetch_state *state = cb;
1594         const char *remote = task_cb;
1595
1596         if (result) {
1597                 strbuf_addf(out, _("could not fetch '%s' (exit code: %d)\n"),
1598                             remote, result);
1599                 state->result = -1;
1600         }
1601
1602         return 0;
1603 }
1604
1605 static int fetch_multiple(struct string_list *list, int max_children)
1606 {
1607         int i, result = 0;
1608         struct strvec argv = STRVEC_INIT;
1609
1610         if (!append && write_fetch_head) {
1611                 int errcode = truncate_fetch_head();
1612                 if (errcode)
1613                         return errcode;
1614         }
1615
1616         strvec_pushl(&argv, "fetch", "--append", "--no-auto-gc",
1617                      "--no-write-commit-graph", NULL);
1618         add_options_to_argv(&argv);
1619
1620         if (max_children != 1 && list->nr != 1) {
1621                 struct parallel_fetch_state state = { argv.v, list, 0, 0 };
1622
1623                 strvec_push(&argv, "--end-of-options");
1624                 result = run_processes_parallel_tr2(max_children,
1625                                                     &fetch_next_remote,
1626                                                     &fetch_failed_to_start,
1627                                                     &fetch_finished,
1628                                                     &state,
1629                                                     "fetch", "parallel/fetch");
1630
1631                 if (!result)
1632                         result = state.result;
1633         } else
1634                 for (i = 0; i < list->nr; i++) {
1635                         const char *name = list->items[i].string;
1636                         strvec_push(&argv, name);
1637                         if (verbosity >= 0)
1638                                 printf(_("Fetching %s\n"), name);
1639                         if (run_command_v_opt(argv.v, RUN_GIT_CMD)) {
1640                                 error(_("Could not fetch %s"), name);
1641                                 result = 1;
1642                         }
1643                         strvec_pop(&argv);
1644                 }
1645
1646         strvec_clear(&argv);
1647         return !!result;
1648 }
1649
1650 /*
1651  * Fetching from the promisor remote should use the given filter-spec
1652  * or inherit the default filter-spec from the config.
1653  */
1654 static inline void fetch_one_setup_partial(struct remote *remote)
1655 {
1656         /*
1657          * Explicit --no-filter argument overrides everything, regardless
1658          * of any prior partial clones and fetches.
1659          */
1660         if (filter_options.no_filter)
1661                 return;
1662
1663         /*
1664          * If no prior partial clone/fetch and the current fetch DID NOT
1665          * request a partial-fetch, do a normal fetch.
1666          */
1667         if (!has_promisor_remote() && !filter_options.choice)
1668                 return;
1669
1670         /*
1671          * If this is a partial-fetch request, we enable partial on
1672          * this repo if not already enabled and remember the given
1673          * filter-spec as the default for subsequent fetches to this
1674          * remote.
1675          */
1676         if (filter_options.choice) {
1677                 partial_clone_register(remote->name, &filter_options);
1678                 return;
1679         }
1680
1681         /*
1682          * Do a partial-fetch from the promisor remote using either the
1683          * explicitly given filter-spec or inherit the filter-spec from
1684          * the config.
1685          */
1686         if (!filter_options.choice)
1687                 partial_clone_get_default_filter_spec(&filter_options, remote->name);
1688         return;
1689 }
1690
1691 static int fetch_one(struct remote *remote, int argc, const char **argv,
1692                      int prune_tags_ok, int use_stdin_refspecs)
1693 {
1694         struct refspec rs = REFSPEC_INIT_FETCH;
1695         int i;
1696         int exit_code;
1697         int maybe_prune_tags;
1698         int remote_via_config = remote_is_configured(remote, 0);
1699
1700         if (!remote)
1701                 die(_("No remote repository specified.  Please, specify either a URL or a\n"
1702                     "remote name from which new revisions should be fetched."));
1703
1704         gtransport = prepare_transport(remote, 1);
1705
1706         if (prune < 0) {
1707                 /* no command line request */
1708                 if (0 <= remote->prune)
1709                         prune = remote->prune;
1710                 else if (0 <= fetch_prune_config)
1711                         prune = fetch_prune_config;
1712                 else
1713                         prune = PRUNE_BY_DEFAULT;
1714         }
1715
1716         if (prune_tags < 0) {
1717                 /* no command line request */
1718                 if (0 <= remote->prune_tags)
1719                         prune_tags = remote->prune_tags;
1720                 else if (0 <= fetch_prune_tags_config)
1721                         prune_tags = fetch_prune_tags_config;
1722                 else
1723                         prune_tags = PRUNE_TAGS_BY_DEFAULT;
1724         }
1725
1726         maybe_prune_tags = prune_tags_ok && prune_tags;
1727         if (maybe_prune_tags && remote_via_config)
1728                 refspec_append(&remote->fetch, TAG_REFSPEC);
1729
1730         if (maybe_prune_tags && (argc || !remote_via_config))
1731                 refspec_append(&rs, TAG_REFSPEC);
1732
1733         for (i = 0; i < argc; i++) {
1734                 if (!strcmp(argv[i], "tag")) {
1735                         char *tag;
1736                         i++;
1737                         if (i >= argc)
1738                                 die(_("You need to specify a tag name."));
1739
1740                         tag = xstrfmt("refs/tags/%s:refs/tags/%s",
1741                                       argv[i], argv[i]);
1742                         refspec_append(&rs, tag);
1743                         free(tag);
1744                 } else {
1745                         refspec_append(&rs, argv[i]);
1746                 }
1747         }
1748
1749         if (use_stdin_refspecs) {
1750                 struct strbuf line = STRBUF_INIT;
1751                 while (strbuf_getline_lf(&line, stdin) != EOF)
1752                         refspec_append(&rs, line.buf);
1753                 strbuf_release(&line);
1754         }
1755
1756         if (server_options.nr)
1757                 gtransport->server_options = &server_options;
1758
1759         sigchain_push_common(unlock_pack_on_signal);
1760         atexit(unlock_pack);
1761         sigchain_push(SIGPIPE, SIG_IGN);
1762         exit_code = do_fetch(gtransport, &rs);
1763         sigchain_pop(SIGPIPE);
1764         refspec_clear(&rs);
1765         transport_disconnect(gtransport);
1766         gtransport = NULL;
1767         return exit_code;
1768 }
1769
1770 int cmd_fetch(int argc, const char **argv, const char *prefix)
1771 {
1772         int i;
1773         struct string_list list = STRING_LIST_INIT_DUP;
1774         struct remote *remote = NULL;
1775         int result = 0;
1776         int prune_tags_ok = 1;
1777
1778         packet_trace_identity("fetch");
1779
1780         /* Record the command line for the reflog */
1781         strbuf_addstr(&default_rla, "fetch");
1782         for (i = 1; i < argc; i++) {
1783                 /* This handles non-URLs gracefully */
1784                 char *anon = transport_anonymize_url(argv[i]);
1785
1786                 strbuf_addf(&default_rla, " %s", anon);
1787                 free(anon);
1788         }
1789
1790         git_config(git_fetch_config, NULL);
1791
1792         argc = parse_options(argc, argv, prefix,
1793                              builtin_fetch_options, builtin_fetch_usage, 0);
1794         if (recurse_submodules != RECURSE_SUBMODULES_OFF) {
1795                 int *sfjc = submodule_fetch_jobs_config == -1
1796                             ? &submodule_fetch_jobs_config : NULL;
1797                 int *rs = recurse_submodules == RECURSE_SUBMODULES_DEFAULT
1798                           ? &recurse_submodules : NULL;
1799
1800                 fetch_config_from_gitmodules(sfjc, rs);
1801         }
1802
1803         if (deepen_relative) {
1804                 if (deepen_relative < 0)
1805                         die(_("Negative depth in --deepen is not supported"));
1806                 if (depth)
1807                         die(_("--deepen and --depth are mutually exclusive"));
1808                 depth = xstrfmt("%d", deepen_relative);
1809         }
1810         if (unshallow) {
1811                 if (depth)
1812                         die(_("--depth and --unshallow cannot be used together"));
1813                 else if (!is_repository_shallow(the_repository))
1814                         die(_("--unshallow on a complete repository does not make sense"));
1815                 else
1816                         depth = xstrfmt("%d", INFINITE_DEPTH);
1817         }
1818
1819         /* no need to be strict, transport_set_option() will validate it again */
1820         if (depth && atoi(depth) < 1)
1821                 die(_("depth %s is not a positive number"), depth);
1822         if (depth || deepen_since || deepen_not.nr)
1823                 deepen = 1;
1824
1825         /* FETCH_HEAD never gets updated in --dry-run mode */
1826         if (dry_run)
1827                 write_fetch_head = 0;
1828
1829         if (all) {
1830                 if (argc == 1)
1831                         die(_("fetch --all does not take a repository argument"));
1832                 else if (argc > 1)
1833                         die(_("fetch --all does not make sense with refspecs"));
1834                 (void) for_each_remote(get_one_remote_for_fetch, &list);
1835         } else if (argc == 0) {
1836                 /* No arguments -- use default remote */
1837                 remote = remote_get(NULL);
1838         } else if (multiple) {
1839                 /* All arguments are assumed to be remotes or groups */
1840                 for (i = 0; i < argc; i++)
1841                         if (!add_remote_or_group(argv[i], &list))
1842                                 die(_("No such remote or remote group: %s"), argv[i]);
1843         } else {
1844                 /* Single remote or group */
1845                 (void) add_remote_or_group(argv[0], &list);
1846                 if (list.nr > 1) {
1847                         /* More than one remote */
1848                         if (argc > 1)
1849                                 die(_("Fetching a group and specifying refspecs does not make sense"));
1850                 } else {
1851                         /* Zero or one remotes */
1852                         remote = remote_get(argv[0]);
1853                         prune_tags_ok = (argc == 1);
1854                         argc--;
1855                         argv++;
1856                 }
1857         }
1858
1859         if (remote) {
1860                 if (filter_options.choice || has_promisor_remote())
1861                         fetch_one_setup_partial(remote);
1862                 result = fetch_one(remote, argc, argv, prune_tags_ok, stdin_refspecs);
1863         } else {
1864                 int max_children = max_jobs;
1865
1866                 if (filter_options.choice)
1867                         die(_("--filter can only be used with the remote "
1868                               "configured in extensions.partialclone"));
1869
1870                 if (stdin_refspecs)
1871                         die(_("--stdin can only be used when fetching "
1872                               "from one remote"));
1873
1874                 if (max_children < 0)
1875                         max_children = fetch_parallel_config;
1876
1877                 /* TODO should this also die if we have a previous partial-clone? */
1878                 result = fetch_multiple(&list, max_children);
1879         }
1880
1881         if (!result && (recurse_submodules != RECURSE_SUBMODULES_OFF)) {
1882                 struct strvec options = STRVEC_INIT;
1883                 int max_children = max_jobs;
1884
1885                 if (max_children < 0)
1886                         max_children = submodule_fetch_jobs_config;
1887                 if (max_children < 0)
1888                         max_children = fetch_parallel_config;
1889
1890                 add_options_to_argv(&options);
1891                 result = fetch_populated_submodules(the_repository,
1892                                                     &options,
1893                                                     submodule_prefix,
1894                                                     recurse_submodules,
1895                                                     recurse_submodules_default,
1896                                                     verbosity < 0,
1897                                                     max_children);
1898                 strvec_clear(&options);
1899         }
1900
1901         string_list_clear(&list, 0);
1902
1903         prepare_repo_settings(the_repository);
1904         if (fetch_write_commit_graph > 0 ||
1905             (fetch_write_commit_graph < 0 &&
1906              the_repository->settings.fetch_write_commit_graph)) {
1907                 int commit_graph_flags = COMMIT_GRAPH_WRITE_SPLIT;
1908
1909                 if (progress)
1910                         commit_graph_flags |= COMMIT_GRAPH_WRITE_PROGRESS;
1911
1912                 write_commit_graph_reachable(the_repository->objects->odb,
1913                                              commit_graph_flags,
1914                                              NULL);
1915         }
1916
1917         close_object_store(the_repository->objects);
1918
1919         if (enable_auto_gc)
1920                 run_auto_gc(verbosity < 0);
1921
1922         return result;
1923 }