$ git clone -n https://src.fedoraproject.org/rpms/rpkg-util.git /var/lib/mock/f41-build-side-2-python-2699868-30377/root/chroot_tmpdir/scmroot/rpkg-util
Cloning into '/var/lib/mock/f41-build-side-2-python-2699868-30377/root/chroot_tmpdir/scmroot/rpkg-util'...
$ git fetch origin 55fe48981c3d51392fe7aacb557cf4ff472e53a5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rpkg-util
 * [new ref]         55fe48981c3d51392fe7aacb557cf4ff472e53a5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 55fe489 New upstream version 3.3-1