Not sure what you mean by timestamp, but I don't think that works for the example I posted. If I rewrite the first commit in history, every single entry will ha

Not sure what you mean by timestamp, but I don't think that works for the example I posted. If I rewrite the first commit in history, every single entry will have different sha's and commit dates. With offsets, clicking "next" will at best feel like nothing happened, or at worst run into the mild off-by-one confusion. With ids, there's no way for the system to know where to go unless there's custom logic to somehow map old sha's to the new ones (assuming that is even possible).