$ git clone -n https://src.fedoraproject.org/rpms/R-unix.git /var/lib/mock/f33-build-258193-50951/root/chroot_tmpdir/scmroot/R-unix
Cloning into '/var/lib/mock/f33-build-258193-50951/root/chroot_tmpdir/scmroot/R-unix'...
$ git reset --hard 96bfcccc1d187c7ec21c1871b12ba4632fe7f515
HEAD is now at 96bfccc Merge branch 'f30'