def METHOD_NAME(patches_dir, series_path=Path('series')):
    """
    Checks if there are duplicate entries in the series file
    series_path is a pathlib.Path to the series file relative to the patches_dir
    returns True if there are duplicate entries; False otherwise.
    """
    entries_seen = set()
    for entry in _read_series_file(patches_dir, series_path):
        if entry in entries_seen:
            get_logger().warning('Patch appears more than once in series: %s', entry)
            return True
        entries_seen.add(entry)
    return False