And waits for them. That's pointless.
Coordination::Responses responses;
        
        source_queue_names = zookeeper->getChildren(fs::path(source_path) / "queue");
        
        ops.push_back(zkutil::makeCheckRequest(fs::path(source_path) / "log_pointer", log_pointer_stat.version));
        auto rc = zookeeper->tryMulti(ops, responses);
        if (rc == Coordination::Error::ZOK)
        {
            break;
        }
        else if (rc == Coordination::Error::ZNODEEXISTS)
        {
            throw Exception(
                "Can not clone replica, because the " + source_replica + " updated to new ClickHouse version",
                ErrorCodes::REPLICA_STATUS_CHANGED);
        }
        else if (responses[1]->error == Coordination::Error::ZBADVERSION)
        {
            
            
            throw Exception(
                "Can not clone replica, because the " + source_replica + " became lost", ErrorCodes::REPLICA_STATUS_CHANGED);
        }
        else if (responses.back()->error == Coordination::Error::ZBADVERSION)
        {
            
            
            LOG_WARNING(log, "Log pointer of source replica {} changed while we loading queue nodes. Will retry.", source_replica);
            continue;
        }