File _service of Package emacs

<services>
  <service name="obs_scm">
	<param name="versionformat">@TAG_OFFSET@.%h</param>
    <param name="versionrewrite-pattern">emacs(.*)</param>
    <param name="versionprefix">30.0.50</param>
	<param name="url">https://git.savannah.gnu.org/git/emacs.git</param>
	<param name="scm">git</param>
    <param name="revision"></param>
  </service>
  <service mode="buildtime" name="tar" />
  <service mode="buildtime" name="recompress">
    <param name="file">*.tar</param>
    <param name="compression">xz</param>
  </service>
  <service name="set_version"/>
</services>