Puppet spec fixtures

That’s how you specify branches in puppetlabs’ spec_helper fixtures.yml:

fixtures:
  forge_modules:
    stdlib:
      repo: "puppetlabs/stdlib"
      ref: "4.6.0"
  symlinks:
    mapr_helpers: "#{source_dir}"
  repositories:
    mapr:
      repo: "http://myurl/puppet-mapr.git"
      # this is a branch. stolen from: don't remember.
      ref: 'remotes/origin/ab/devel'