$ git clone -n https://src.fedoraproject.org/rpms/R-units.git /var/lib/mock/f31-build-100511-33271/root/chroot_tmpdir/scmroot/R-units
Cloning into '/var/lib/mock/f31-build-100511-33271/root/chroot_tmpdir/scmroot/R-units'...
$ git reset --hard 1aebfb9bc14db533236237bbc86ceabba272bdbb
HEAD is now at 1aebfb9 update to 0.6-4