$ git clone -n https://src.fedoraproject.org/rpms/R-docopt.git /var/lib/mock/f38-build-side-42-init-devel-992044-29120/root/chroot_tmpdir/scmroot/R-docopt
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-992044-29120/root/chroot_tmpdir/scmroot/R-docopt'...
$ git fetch origin 59ee6b43e39087f46a1ef2d718bf64a87a1f6477:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-docopt
 * [new ref]         59ee6b43e39087f46a1ef2d718bf64a87a1f6477 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 59ee6b4 initial