$ git clone -n https://src.fedoraproject.org/rpms/python-flufl-testing.git /var/lib/mock/f45-build-30758-647/root/chroot_tmpdir/scmroot/python-flufl-testing
Cloning into '/var/lib/mock/f45-build-30758-647/root/chroot_tmpdir/scmroot/python-flufl-testing'...
$ git fetch origin 0568600294bc434125222180e4ac2fe9eda91ab4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-flufl-testing
 * [new ref]         0568600294bc434125222180e4ac2fe9eda91ab4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0568600 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild