def rsync_get_file(uri_from, uri_to, user, host, port, key):
    cmd = [
        'rsync',
        '-e',
        'ssh -i {} -p {} {}'.format(key, port, ' '.join(SSH_OPTIONS)),
        '{}@{}:{}'.format(user, host, uri_from),
        uri_to,
    ]
    _call(cmd)