if (!push_all && !is_zero_sha1(ref->old_sha1)) {
old_sha1_hex = xmalloc(42);
sprintf(old_sha1_hex, "^%s",
sha1_to_hex(ref->old_sha1));
if (!push_all && !is_zero_sha1(ref->old_sha1)) {
old_sha1_hex = xmalloc(42);
sprintf(old_sha1_hex, "^%s",
sha1_to_hex(ref->old_sha1));