$ git clone -n https://src.fedoraproject.org/rpms/golly.git /var/lib/mock/f45-build-12875-444/root/chroot_tmpdir/scmroot/golly
Cloning into '/var/lib/mock/f45-build-12875-444/root/chroot_tmpdir/scmroot/golly'...
$ git fetch origin 5e87523ac88fc555d86b25b45d0175d8be16d73e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golly
 * [new ref]         5e87523ac88fc555d86b25b45d0175d8be16d73e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5e87523 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild