File _servicedata of Package obs-service-download_files

<servicedata>
  <service name="tar_scm">
    <param name="url">git@github.com:openSUSE/obs-service-download_files.git</param>
    <param name="changesrevision">690c01ed7eb7913c3e16eccd16203cba3691648a</param>
  </service>
</servicedata>