What's the reason for this?
Media is the most likely thing I'd consider using AI for as part of a contribution to an open source project.
My code would be hand crafted by me. Any AI use would be similar to Google use: a way to search for examples and explanations if I'm unclear on something. Said examples and explanations would then be read, and after I understand what is going on I'd write my code.
Any documentation I contributed would also be hand written. However, if I wanted to include a diagram in that documentation I might give AI a try. It can't be worse than my zero talent attempts to make something in OmniGraffle or worse a photograph of my attempt to draw a nice diagram on paper.
I'd have expected this to be the least concerning use of AI.
Very very few companies today have zero lines of AI generated code in their codebases. You can't copyright or patent specific code structures or ways of solving common problems.