IMHO any project which accepts contributions under the DCO (https://developercertificate.org/) has an implicit ban on most AI generated code. A contributor cannot credibly certify to meeting clauses (a) or (b), as they require understanding copyright & licensing status of the AI output, for which there is no broadly accepted legal opinion today. A machine (or its vendor) can't certify compliance with clause (c), unless there was exceptionally clear training data, which is almost never the case.