$ git clone -n https://github.com/xcp-ng-rpms/libempserver.git /var/lib/mock/v9.0-u-ydi1-11159-29572/root/chroot_tmpdir/scmroot/libempserver
Cloning into '/var/lib/mock/v9.0-u-ydi1-11159-29572/root/chroot_tmpdir/scmroot/libempserver'...
$ git fetch origin 47078d42db9e020f199c6c254acc7af0918661bc:KOJI_FETCH_HEAD
From https://github.com/xcp-ng-rpms/libempserver
 * [new ref]         47078d42db9e020f199c6c254acc7af0918661bc -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 47078d4 bump release for test build