How to create new branch on LP without stacking?

[Matt Nordhoff]

Alexander Belchenko wrote:
> Is it possible to create new branch at LP without stacking?
> I'm thinking about dogfooding new 2a format but it should be rich-root,
> while all other branches is in plain 1.9 format.
> So I'd prefer to keep it in fully separate branch.
> 
> Or I can test 2a only with local branches?

I once did it by creating the branch in +junk, which doesn't stack, and
then moving it to the right project. But then they took that feature
away a couple days later.
--