$ git clone -n https://github.com/xcp-ng-rpms/branding-xcp-ng /var/lib/mock/v9.0-u-ydi1-10795-29314/root/chroot_tmpdir/scmroot/branding-xcp-ng
Cloning into '/var/lib/mock/v9.0-u-ydi1-10795-29314/root/chroot_tmpdir/scmroot/branding-xcp-ng'...
$ git fetch origin a55b4ede06def99ca1af025d9e9f8e4430fb8c31:KOJI_FETCH_HEAD
From https://github.com/xcp-ng-rpms/branding-xcp-ng
 * [new ref]         a55b4ede06def99ca1af025d9e9f8e4430fb8c31 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a55b4ed bump release for test build