Using `jj edit` will edit a commit you specify, and `jj new` will make a new empty commit after the one you specify. These work exactly the same whether you specify a commit by branch or by the hash. I'd argue that you're getting exactly what you ask for with these commands, and by comparison, what "checkout" is asking for is much less obvious (and depends on context). We've just internalized the bad behavior of git for so long that it's become normalized.