Andrew's git / gitweb.git / t/t4013/diff.diff_--dirstat_master~1_master~2
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t / t4013 / diff.diff_--dirstat_master~1_master~2on commit do_one_ref(): null_sha1 check is not about broken ref (eafb452)
   1$ git diff --dirstat master~1 master~2
   2  40.0% dir/
   3$