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 = SOURCE_OBJECTS_LIST
        operator = GCSToGCSOperator(
            task_id=TASK_ID, source_bucket=TEST_BUCKET, source_objects=SOURCE_OBJECTS_TWO_EMPTY_STRING
        )
        with pytest.raises(AirflowException, match="You can't have two empty strings inside source_object"):
            operator.execute(None)
    @mock.patch('airflow.providers.google.cloud.transfers.gcs_to_gcs.GCSHook')
    def test_executes_with_single_item_in_source_objects(self, mock_hook):
        operator = GCSToGCSOperator(
            task_id=TASK_ID, source_bucket=TEST_BUCKET, source_objects=SOURCE_OBJECTS_SINGLE_FILE
        )
        operator.execute(None)
        mock_hook.return_value.list.assert_called_once_with(
            TEST_BUCKET, prefix=SOURCE_OBJECTS_SINGLE_FILE[0], delimiter=None
        )
    @mock.patch('airflow.providers.google.cloud.transfers.gcs_to_gcs.GCSHook')
    def test_executes_with_multiple_items_in_source_objects(self, mock_hook):
        operator = GCSToGCSOperator(
            task_id=TASK_ID, source_bucket=TEST_BUCKET, source_objects=SOURCE_OBJECTS_MULTIPLE_FILES
        )
        operator.execute(None)
        mock_hook.return_value.list.assert_has_calls(
            [
                mock.call(TEST_BUCKET, prefix='test_object/file1.txt', delimiter=None),
                mock.call(TEST_BUCKET, prefix='test_object/file2.txt', delimiter=None),
            ],
            any_order=True,
        )
    @mock.patch('airflow.providers.google.cloud.transfers.gcs_to_gcs.GCSHook')
    def test_executes_with_a_delimiter(self, mock_hook):