File _service of Package libalternatives

<services>
<service name="obs_scm" mode="manual">
  <param name="scm">git</param>
  <param name="url">https://github.com/openSUSE/libalternatives.git</param>
  <param name="versionformat">@PARENT_TAG@+@TAG_OFFSET@.%h</param>
  <param name="revision">b848aad</param>
  <param name="changesgenerate">enable</param>
</service>
<service mode="buildtime" name="tar"/>
</services>