t / t4013 / diff.diff_--no-index_--raw_--no-abbrev_dir2_diron commit tree-diff: convert diff_root_tree_sha1 to struct object_id (7b8dea0)
   1$ git diff --no-index --raw --no-abbrev dir2 dir
   2:000000 100644 0000000000000000000000000000000000000000 0000000000000000000000000000000000000000 A      dir/sub
   3$