$ git clone -n https://src.fedoraproject.org/rpms/starplot-contrib.git /var/lib/mock/f45-build-36549-706/root/chroot_tmpdir/scmroot/starplot-contrib
Cloning into '/var/lib/mock/f45-build-36549-706/root/chroot_tmpdir/scmroot/starplot-contrib'...
$ git fetch origin fdf8b55d875fb14afb6c051ce183918a84ac3548:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/starplot-contrib
 * [new ref]         fdf8b55d875fb14afb6c051ce183918a84ac3548 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fdf8b55 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild