$ git clone -n https://src.fedoraproject.org/rpms/R-backports.git /var/lib/mock/f33-build-340134-58655/root/chroot_tmpdir/scmroot/R-backports
Cloning into '/var/lib/mock/f33-build-340134-58655/root/chroot_tmpdir/scmroot/R-backports'...
$ git reset --hard 681daff2d6023a66264f51a9832cafb8751cea18
HEAD is now at 681daff Update to latest version.