define git::mirror( $source,
                    $description,
                    $refresh = '*/5') {

    include git::common
    exec { "/usr/bin/git clone --mirror ${source} ${name}":
        alias   => "git mirror ${name}",
        creates => $name,
        before  => File["${name}/description"],
    }

    file { "${name}/description":
        content => $description,
    }

    cron { "update ${name}":
        command => "cd ${name} ; /usr/bin/git fetch -q",
        minute  => $refresh
    }
}