The laws which any contributors to the OSS project are subject to. Some projects geographically restrict who can contribute to avoid issues like this, but when

The laws which any contributors to the OSS project are subject to. Some projects geographically restrict who can contribute to avoid issues like this, but when laws are passed by a jurisdiction in which existing maintainers reside those maintainers have the choice to either comply or move to a different jurisdiction. Moving is extremely disruptive & expensive, so they often comply.