$ git clone -n https://src.fedoraproject.org/rpms/libtbox.git /var/lib/mock/f45-build-17067-495/root/chroot_tmpdir/scmroot/libtbox
Cloning into '/var/lib/mock/f45-build-17067-495/root/chroot_tmpdir/scmroot/libtbox'...
$ git fetch origin 333da3dc47f4b9349a77163db1986dcf9b2aebbf:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libtbox
 * [new ref]         333da3dc47f4b9349a77163db1986dcf9b2aebbf -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 333da3d Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild