File _servicedata of Package git-sync

<servicedata>
  <service name="tar_scm">
    <param name="url">https://github.com/simonthum/git-sync.git</param>
    <param name="changesrevision">82f3041e7c3bae5c97e8f627be72f1cd9fb87ee4</param>
  </service>
</servicedata>