git p4 test: disable '-x' tracing in the p4d watchdog loop

[git] / t / t4013 / diff.diff-tree_--stat_--compact-summary_initial_mode

$ git diff-tree --stat --compact-summary initial mode
 file0 (mode +x) | 0
 1 file changed, 0 insertions(+), 0 deletions(-)
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