$ git clone -n https://github.com/xcp-ng-rpms/xo-lite.git /var/lib/mock/v8.3-incoming-9771-28486/root/chroot_tmpdir/scmroot/xo-lite
Cloning into '/var/lib/mock/v8.3-incoming-9771-28486/root/chroot_tmpdir/scmroot/xo-lite'...
$ git fetch origin b16e6de1630b1ea3a93f60789f1c1dcc7be17070:KOJI_FETCH_HEAD
From https://github.com/xcp-ng-rpms/xo-lite
 * [new ref]         b16e6de1630b1ea3a93f60789f1c1dcc7be17070 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b16e6de Merge pull request #25 from xcp-ng-rpms/gdy-v0.17.0