Comment 3 for bug 685571

> That's a very different issue though. You can already specify an
> explicit revision to check out in a recipe, and what you are looking for
> would (if I understand correctly) be covered by a new revspec
> ("lasttag:") in Bazaar.

You can use lasttag: in a recipe? What I had in my head was to avoid having to
update the recipe so you only need to update the relevant branches (including a
tag) and everything else magically works.