$ git clone -n https://src.fedoraproject.org/rpms/sil-gentium-plus-compact-fonts.git /var/lib/mock/f45-build-35973-700/root/chroot_tmpdir/scmroot/sil-gentium-plus-compact-fonts
Cloning into '/var/lib/mock/f45-build-35973-700/root/chroot_tmpdir/scmroot/sil-gentium-plus-compact-fonts'...
$ git fetch origin 09abea6e85f0b7c431b02369b7ff0ec70794d958:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/sil-gentium-plus-compact-fonts
 * [new ref]         09abea6e85f0b7c431b02369b7ff0ec70794d958 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 09abea6 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild