$ git clone -n https://github.com/xcp-ng-rpms/branding-xcp-ng /var/lib/mock/v9.0-u-ydi1-10797-29314/root/chroot_tmpdir/scmroot/branding-xcp-ng
Cloning into '/var/lib/mock/v9.0-u-ydi1-10797-29314/root/chroot_tmpdir/scmroot/branding-xcp-ng'...
$ git fetch origin 91690c6af626442515f6f0bdc57558c539c27b5d:KOJI_FETCH_HEAD
From https://github.com/xcp-ng-rpms/branding-xcp-ng
 * [new ref]         91690c6af626442515f6f0bdc57558c539c27b5d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 91690c6 bump release for test build