$ git clone -n https://github.com/xcp-ng-rpms/branding-xcp-ng /var/lib/mock/v9.0-u-ydi1-10798-29314/root/chroot_tmpdir/scmroot/branding-xcp-ng
Cloning into '/var/lib/mock/v9.0-u-ydi1-10798-29314/root/chroot_tmpdir/scmroot/branding-xcp-ng'...
$ git fetch origin 9d34881c3fb7539a2ad52bbaeab659171f96371b:KOJI_FETCH_HEAD
From https://github.com/xcp-ng-rpms/branding-xcp-ng
 * [new ref]         9d34881c3fb7539a2ad52bbaeab659171f96371b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9d34881 bump release for test build