code: def get_query_batch_request(self, batch_id, job_id=None):
          
          if not job_id:
              job_id = self.lookup_job_id(batch_id)
  
          url = self.endpoint + "/job/{}/batch/{}/request".format(job_id, batch_id)
          resp = requests.get(url, headers=self.headers())
          self.check_status(resp)
          return resp.text
docs: Fetch the request sent for the batch. Note should only used for query batches