t / t4013 / diff.diff_--no-index_--raw_--abbrev=4_dir2_diron commit sha1_name: convert disambiguate_hint_fn to take object_id (d2b7d9c)
   1$ git diff --no-index --raw --abbrev=4 dir2 dir
   2:000000 100644 0000... 0000... A        dir/sub
   3$