The GCStoGCS operator using the _replace=False_ flag and specifying _source_object != destination_object_, will not work properly, because it is comparing [apples](https://github.com/apache/airflow/blob/main/airflow/providers/google/cloud/transfers/gcs_to_gcs.py#L351) with [pears](https://github.com/apache/airflow/blob/0dd70de9492444d52e0afaadd7a510fc8a95369c/airflow/providers/google/cloud/transfers/gcs_to_gcs.py#L357).

Cause: the _prefix_ in the _pears_ case needs to be calculated from the _destination_object_, however, it is coming from the _source_object_.




airflow/providers/google/cloud/transfers/gcs_to_gcs.py
if self.is_older_than:
            
            
            if hook.is_older_than(self.source_bucket, source_object, self.is_older_than):
                self.log.info("Object is older than %s seconds ago", self.is_older_than)
            else:
                self.log.debug("Object is not older than %s seconds ago", self.is_older_than)
                return
        elif self.last_modified_time and self.maximum_modified_time:
            
            
            if hook.is_updated_between(
                self.source_bucket, source_object, self.last_modified_time, self.maximum_modified_time
            ):
                self.log.info(
                    "Object has been modified between %s and %s",
                    self.last_modified_time,
                    self.maximum_modified_time,
                )
            else:
                self.log.debug(