$ git clone -n https://src.fedoraproject.org/rpms/nfs-utils.git /var/lib/mock/f41-build-850541-165462/root/chroot_tmpdir/scmroot/nfs-utils
Cloning into '/var/lib/mock/f41-build-850541-165462/root/chroot_tmpdir/scmroot/nfs-utils'...
$ git fetch origin 74df1e59bd6b920e786372610b439f20636cbd50:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/nfs-utils
 * [new ref]         74df1e59bd6b920e786372610b439f20636cbd50 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 74df1e5 Updated to the latest RC release: nfs-utils-2-7-2-rc1