$ git clone -n https://src.fedoraproject.org/rpms/plantri.git /var/lib/mock/f45-build-28579-631/root/chroot_tmpdir/scmroot/plantri
Cloning into '/var/lib/mock/f45-build-28579-631/root/chroot_tmpdir/scmroot/plantri'...
$ git fetch origin 4179b3aee6ac5395ac79dc07a9e1f88be6e8bfe4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/plantri
 * [new ref]         4179b3aee6ac5395ac79dc07a9e1f88be6e8bfe4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4179b3a Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild