$ git clone -n https://src.fedoraproject.org/rpms/byzanz.git /var/lib/mock/f38-build-side-42-init-devel-1306016-30685/root/chroot_tmpdir/scmroot/byzanz
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1306016-30685/root/chroot_tmpdir/scmroot/byzanz'...
$ git fetch origin a7f232c55dd5104c282ac168366b358408ec0655:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/byzanz
 * [new ref]         a7f232c55dd5104c282ac168366b358408ec0655 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a7f232c Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild