Who said anything about GitHub? The situation would call for a highly specialized, custom-made solution. If you think that's impossible, please share your reasons for thinking so. Comments like yours are pure FUD and aren't in any way helpful.
Barring military secrets, perhaps, there's no reason the AI program's current state would necessarily have to be a black box. Nor would it need to be a neural network. I also disagree with the assertion that complex things cannot be vetted.