$ git clone -n https://src.fedoraproject.org/rpms/wf.git /var/lib/mock/f45-build-38333-723/root/chroot_tmpdir/scmroot/wf
Cloning into '/var/lib/mock/f45-build-38333-723/root/chroot_tmpdir/scmroot/wf'...
$ git fetch origin a3acff2ea2a832d603139be57a1f8410852af57b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/wf
 * [new ref]         a3acff2ea2a832d603139be57a1f8410852af57b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a3acff2 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild