$ git clone -n https://src.fedoraproject.org/rpms/godoctor.git /var/lib/mock/f45-build-20061-565/root/chroot_tmpdir/scmroot/godoctor
Cloning into '/var/lib/mock/f45-build-20061-565/root/chroot_tmpdir/scmroot/godoctor'...
$ git fetch origin ff2043ccfc2b7688e447bf6f3f208d937b03a6aa:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/godoctor
 * [new ref]         ff2043ccfc2b7688e447bf6f3f208d937b03a6aa -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ff2043c Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild