$ git clone -n https://src.fedoraproject.org/rpms/quake2.git /var/lib/mock/f45-build-34193-680/root/chroot_tmpdir/scmroot/quake2
Cloning into '/var/lib/mock/f45-build-34193-680/root/chroot_tmpdir/scmroot/quake2'...
$ git fetch origin 3037adc5f5ce4ce72ed3f8a18193d2307e604e3e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/quake2
 * [new ref]         3037adc5f5ce4ce72ed3f8a18193d2307e604e3e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3037adc Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild