$ git clone -n https://github.com/xcp-ng-rpms/xcp-ng-release /var/lib/mock/v9.0-incoming-11262-29613/root/chroot_tmpdir/scmroot/xcp-ng-release
Cloning into '/var/lib/mock/v9.0-incoming-11262-29613/root/chroot_tmpdir/scmroot/xcp-ng-release'...
$ git fetch origin 33fa214194831220521d672aa7c153c92aa046ca:KOJI_FETCH_HEAD
From https://github.com/xcp-ng-rpms/xcp-ng-release
 * [new ref]         33fa214194831220521d672aa7c153c92aa046ca -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 33fa214 Merge pull request #42 from xcp-ng-rpms/ydi/9-bootstrap