$ git clone -n https://src.fedoraproject.org/rpms/R-bit64.git /var/lib/mock/f33-build-546449-65258/root/chroot_tmpdir/scmroot/R-bit64
Cloning into '/var/lib/mock/f33-build-546449-65258/root/chroot_tmpdir/scmroot/R-bit64'...
$ git reset --hard 343615cc72f91f9ca69c6cd76694a2919e22ae57
HEAD is now at 343615c Update to latest version.