code: def fetch(self, zookeeper_path, settings=None):
          
          return self._partition_operation_sql('FETCH', settings=settings, from_part=zookeeper_path)
docs: Download a partition from another server.
          :param zookeeper_path: Path in zookeeper to fetch from
          :param settings: Settings for executing request to ClickHouse over db.raw() method
          :return: SQL Query