the following is my personal opinion, unrelated to my work >In that B scenario, would the human be infringing on the original's copyright? // Depends on juris

the following is my personal opinion, unrelated to my work >In that B scenario, would the human be infringing on the original's copyright? // Depends on jurisdiction but in general I'd say no as quoting, particularly an insubstantial portion, is allowed (certainly under USA Fair Use, possibly under UK Fair Dealing). However, and again depends on jurisdiction, copying a whole work to use for AI training or searching can be restricted (though it's on the GitHub license in this case). The snippet might be allowed but copying into a training corpus may be excluded (I think UK have an exception for AI training, but I may have misremembered, it might be a suggestion??).