File _service of Package mkosi

<services>
  <service name="tar_scm">
    <param name="scm">git</param>
    <param name="url">https://github.com/systemd/mkosi</param>
    <param name="revision">main</param>
    <param name="versionformat">27~devel+git%cd.%h</param>
    <param name="changesgenerate">enable</param>
  </service>
  <service name="recompress">
    <param name="file">*.tar</param>
    <param name="compression">xz</param>
  </service>
  <service name="set_version"/>
</services>