$ git clone -n https://src.fedoraproject.org/rpms/libxfce4util.git /var/lib/mock/f45-build-17362-498/root/chroot_tmpdir/scmroot/libxfce4util
Cloning into '/var/lib/mock/f45-build-17362-498/root/chroot_tmpdir/scmroot/libxfce4util'...
$ git fetch origin 3df49bde2b83ca718f84c5c0a08f6f20a98366ba:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libxfce4util
 * [new ref]         3df49bde2b83ca718f84c5c0a08f6f20a98366ba -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3df49bd Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild