On previous projects, I've used separate staging and production stages
which would both check out source code from a same master branch.

Now, for a project where static content gets added frequently through
the repository, I'm feeling the need for either:a separate staging
branch or, an experimental stage + branch to deploy long running work
on new features.

I'm interested in your experience, pros and cons if you've tried this
approach, what your everyday release cycle using Capistrano + Git
looks like.

Thanks in advance.