fetch: only populate existing_refs if needed
[git] / t / t4013 / diff.log_--first-parent_--diff-merges=off_-p_master
2020-08-18  Junio C HamanoMerge branch 'so/log-diff-merges-opt'
2020-08-11  Sergey Organovt/t4013: add test for --diff-merges=off