$ git clone -n https://src.fedoraproject.org/rpms/openeuclide.git /var/lib/mock/f45-build-21032-577/root/chroot_tmpdir/scmroot/openeuclide
Cloning into '/var/lib/mock/f45-build-21032-577/root/chroot_tmpdir/scmroot/openeuclide'...
$ git fetch origin 250b8a859bf3909ecc5786e155f5f151b1432569:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/openeuclide
 * [new ref]         250b8a859bf3909ecc5786e155f5f151b1432569 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 250b8a8 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild