$ git clone -n https://github.com/xcp-ng-rpms/xcp-ng-deps.git /var/lib/mock/v8.3-u-pcoval1-11149-29562/root/chroot_tmpdir/scmroot/xcp-ng-deps
Cloning into '/var/lib/mock/v8.3-u-pcoval1-11149-29562/root/chroot_tmpdir/scmroot/xcp-ng-deps'...
$ git fetch origin 9f1f3d5ce7be687353fed723dad1cc5a64325f4f:KOJI_FETCH_HEAD
From https://github.com/xcp-ng-rpms/xcp-ng-deps
 * [new ref]         9f1f3d5ce7be687353fed723dad1cc5a64325f4f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9f1f3d5 bump release for test build