[PATCH v7 24/42] fast-import.c: use a ref transaction when dumping tags

@@ -1736,15 +1736,22 @@ static void dump_tags(void)
 {
 	static const char *msg = "fast-import";
 	struct tag *t;
-	struct ref_lock *lock;
 	char ref_name[PATH_MAX];
+	struct strbuf err = STRBUF_INIT;
+	struct ref_transaction *transaction;
 
+	transaction = ref_transaction_begin();
 	for (t = first_tag; t; t = t->next_tag) {
-		sprintf(ref_name, "tags/%s", t->name);
-		lock = lock_ref_sha1(ref_name, NULL);
-		if (!lock || write_ref_sha1(lock, t->sha1, msg) < 0)
-			failure |= error("Unable to update %s", ref_name);
+		sprintf(ref_name, "refs/tags/%s", t->name);
+
+		if (ref_transaction_update(transaction, ref_name, t->sha1,
+					   NULL, 0, 0))
+			failure |= error("Unable to update %s", err.buf);
 	}
+	if (failure || ref_transaction_commit(transaction, msg, &err))
+		failure |= error("Unable to update %s", err.buf);
+	ref_transaction_free(transaction);
+	strbuf_release(&err);
 }
 
 static void dump_marks_helper(FILE *f,