UE_HEAD           340 builtin/reflog.c 		cb->unreachable_expire_kind = UE_HEAD;
UE_HEAD           355 builtin/reflog.c 		if (cb->unreachable_expire_kind == UE_HEAD) {
UE_HEAD           374 builtin/reflog.c 		if (cb->unreachable_expire_kind == UE_HEAD) {