t / t5100 / patch0018--no-inbody-headerson commit archive: convert write_archive_entry_fn_t to object_id (015ff4f)
   1diff --git a/foo b/foo
   2index e69de29..d95f3ad 100644
   3--- a/foo
   4+++ b/foo
   5@@ -0,0 +1 @@
   6+content