$ git clone -n https://src.fedoraproject.org/rpms/python-prefixed.git /var/lib/mock/f45-build-32075-657/root/chroot_tmpdir/scmroot/python-prefixed
Cloning into '/var/lib/mock/f45-build-32075-657/root/chroot_tmpdir/scmroot/python-prefixed'...
$ git fetch origin efbde70a1bd2a7827e5a2aac20e435fc238b4a69:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-prefixed
 * [new ref]         efbde70a1bd2a7827e5a2aac20e435fc238b4a69 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at efbde70 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild