$ git clone -n https://github.com/xcp-ng-rpms/xcp-ng-release /var/lib/mock/v9.0-u-ydi1-11176-29579/root/chroot_tmpdir/scmroot/xcp-ng-release
Cloning into '/var/lib/mock/v9.0-u-ydi1-11176-29579/root/chroot_tmpdir/scmroot/xcp-ng-release'...
$ git fetch origin 5a374c82220534669751955cb5dc962c425c320b:KOJI_FETCH_HEAD
From https://github.com/xcp-ng-rpms/xcp-ng-release
 * [new ref]         5a374c82220534669751955cb5dc962c425c320b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5a374c8 bump release for test build