$ git clone -n https://github.com/xcp-ng-rpms/xcp-ng-xapi-plugins.git /var/lib/mock/v8.3-incoming-11299-29634/root/chroot_tmpdir/scmroot/xcp-ng-xapi-plugins
Cloning into '/var/lib/mock/v8.3-incoming-11299-29634/root/chroot_tmpdir/scmroot/xcp-ng-xapi-plugins'...
$ git fetch origin e16c4583fd7e3427feb290ed79b32d114fbe2efa:KOJI_FETCH_HEAD
From https://github.com/xcp-ng-rpms/xcp-ng-xapi-plugins
 * [new ref]         e16c4583fd7e3427feb290ed79b32d114fbe2efa -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e16c458 Merge pull request #19 from xcp-ng-rpms/srt/sdncontroller-1.16