File _servicedata of Package rollback-helper

<servicedata>
  <service name="tar_scm">
    <param name="url">git://github.com/openSUSE/rollback-helper.git</param>
    <param name="changesrevision">3c7281dbf3153304e90ce9aeef2306cc1a0fbd7c</param>
 </service>
</servicedata>