Unfortunately this statement would not offer sufficient legal protection, so the original authors would have to be convinced to give up their previous rights and change the upstream copyright (and huggingface should update their repo license statement). Of course, these days it is typically easy enough to reimplement the code from a paper in plain pytorch,
so I’m not sure one needs all this huggingface repo with the extra framework and risk, but to me it doesnt fit the requirement of the OP question.