t / t4013 / diff.noellipses-diff_--no-index_--raw_dir2_diron commit unpack_trees: fix breakage when o->src_index != o->dst_index (7db1183)
   1$ git diff --no-index --raw dir2 dir
   2:000000 100644 0000000 0000000 A        dir/sub
   3$