def __mock_sources(sources):
    """
    Create mock sources

    :param sources:  List of sources
    :return:         List of mock sources
    """
    tmp_sources = []
    for source in sources:
        tmp_sources.append((source[0], ':'.join(['mock'] + source[1].split(
            ':')[1:]), source[2], source[3]))
    sources = tmp_sources
    return tmp_sources
