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_.




tests/providers/google/cloud/transfers/test_gcs_to_gcs.py
mock_hook.return_value.list.return_value = ['test_object/file1.txt', 'test_object/file2.txt']
        operator = GCSToGCSOperator(
            task_id=TASK_ID,
            source_bucket=TEST_BUCKET,
            source_objects=SOURCE_OBJECTS_LIST,
            destination_bucket=DESTINATION_BUCKET,
            destination_object=DESTINATION_OBJECT,
            delimiter='.txt',
        )
        operator.execute(None)
        mock_calls = [
            mock.call(TEST_BUCKET, 'test_object/file1.txt', DESTINATION_BUCKET, "test_object/file1.txt"),
            mock.call(TEST_BUCKET, 'test_object/file2.txt', DESTINATION_BUCKET, "test_object/file2.txt"),
        ]
        mock_hook.return_value.rewrite.assert_has_calls(mock_calls)
    @mock.patch('airflow.providers.google.cloud.transfers.gcs_to_gcs.GCSHook')
    def test_executes_with_no_destination_bucket_and_no_destination_object(self, mock_hook):