And waits for them. That's pointless.
table_lock_holder = lockForShare(RWLockImpl::NO_QUERY, getSettings()->lock_acquire_timeout_for_background_operations);
    
    Stopwatch stopwatch;
    MutableDataPartPtr part;
    DataPartsVector replaced_parts;
    auto write_part_log = [&] (const ExecutionStatus & execution_status)
    {
        writePartLog(
            PartLogElement::DOWNLOAD_PART, execution_status, stopwatch.elapsed(),
            part_name, part, replaced_parts, nullptr);
    };
    DataPartPtr part_to_clone;
    {
        
        
        
        auto covered_part_info = part_info;
        covered_part_info.mutation = 0;
        auto source_part = getActiveContainingPart(covered_part_info);
        if (source_part)
        {
            MinimalisticDataPartChecksums source_part_checksums;
            source_part_checksums.computeTotalChecksums(source_part->checksums);
            MinimalisticDataPartChecksums desired_checksums;
            String part_path = fs::path(source_replica_path) / "parts" / part_name;
            String part_znode = zookeeper->get(part_path);
            if (!part_znode.empty())
                desired_checksums = ReplicatedMergeTreePartHeader::fromString(part_znode).getChecksums();
            else
            {