$ git clone -n https://src.fedoraproject.org/rpms/gpredict.git /var/lib/mock/f45-build-12951-444/root/chroot_tmpdir/scmroot/gpredict
Cloning into '/var/lib/mock/f45-build-12951-444/root/chroot_tmpdir/scmroot/gpredict'...
$ git fetch origin e1fde3c84c3a7821848c50f0c8c655d9fd1e9900:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gpredict
 * [new ref]         e1fde3c84c3a7821848c50f0c8c655d9fd1e9900 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e1fde3c Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild