Function pack_options_allow_reuse

builtin/pack-objects.c:4653–4661

* This tracks any options which pack-reuse code expects to be on, or which a * reader of the pack might not understand, and which would therefore prevent * blind reuse of what we have on disk. */

 * blind reuse of what we have on disk.
 */
static int pack_options_allow_reuse(void)
{
	return allow_pack_reuse != NO_PACK_REUSE &&
	       pack_to_stdout &&
	       !ignore_packed_keep_on_disk &&
	       !ignore_packed_keep_in_core &&
	       (!local || !have_non_local_packs) &&
	       !incremental;
}

static int get_object_list_from_bitmap(struct rev_info *revs)
{