$ git clone -n https://src.fedoraproject.org/rpms/hfg-gmuend-openmoji-fonts.git /var/lib/mock/f45-build-13408-450/root/chroot_tmpdir/scmroot/hfg-gmuend-openmoji-fonts
Cloning into '/var/lib/mock/f45-build-13408-450/root/chroot_tmpdir/scmroot/hfg-gmuend-openmoji-fonts'...
$ git fetch origin 5d0e172df8b1d6105641c2836b0b4d18674a4835:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/hfg-gmuend-openmoji-fonts
 * [new ref]         5d0e172df8b1d6105641c2836b0b4d18674a4835 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5d0e172 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild