$ git clone -n https://src.fedoraproject.org/rpms/nfs-utils.git /var/lib/mock/f42-build-867483-175514/root/chroot_tmpdir/scmroot/nfs-utils
Cloning into '/var/lib/mock/f42-build-867483-175514/root/chroot_tmpdir/scmroot/nfs-utils'...
$ git fetch origin b932acdd2d46337cf04b013a0bbcd41b29efa96c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/nfs-utils
 * [new ref]         b932acdd2d46337cf04b013a0bbcd41b29efa96c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b932acd Add one more compat file provide