$ git clone -n https://src.fedoraproject.org/rpms/gfs-jackson-fonts.git /var/lib/mock/f45-build-9846-409/root/chroot_tmpdir/scmroot/gfs-jackson-fonts
Cloning into '/var/lib/mock/f45-build-9846-409/root/chroot_tmpdir/scmroot/gfs-jackson-fonts'...
$ git fetch origin 038797f1f8e6ef14b7ceef7efbfbb2564564bc3d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gfs-jackson-fonts
 * [new ref]         038797f1f8e6ef14b7ceef7efbfbb2564564bc3d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 038797f Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild