$ git clone -n https://src.fedoraproject.org/rpms/python-curio.git /var/lib/mock/f45-build-30200-643/root/chroot_tmpdir/scmroot/python-curio
Cloning into '/var/lib/mock/f45-build-30200-643/root/chroot_tmpdir/scmroot/python-curio'...
$ git fetch origin 01cee06f59906e7b4961c8799de9578465a2a6a9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-curio
 * [new ref]         01cee06f59906e7b4961c8799de9578465a2a6a9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 01cee06 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild