$ git clone -n https://src.fedoraproject.org/rpms/ctan-kerkis-fonts.git /var/lib/mock/f45-build-5751-341/root/chroot_tmpdir/scmroot/ctan-kerkis-fonts
Cloning into '/var/lib/mock/f45-build-5751-341/root/chroot_tmpdir/scmroot/ctan-kerkis-fonts'...
$ git fetch origin 15a157e9fbd73bf4021d2cf9aa781680f53b095e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ctan-kerkis-fonts
 * [new ref]         15a157e9fbd73bf4021d2cf9aa781680f53b095e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 15a157e Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild