Function obj_is_packed

builtin/pack-objects.c:3330–3335

}

static int obj_is_packed(const struct object_id *oid)
{
	return packlist_find(&to_pack, oid) ||
		(reuse_packfile_bitmap &&
		 bitmap_walk_contains(bitmap_git, reuse_packfile_bitmap, oid));
}

static void add_tag_chain(const struct object_id *oid)
{