# File lib/gitlab_git/repository.rb, line 768
      def create_branch(ref, start_point = "HEAD")
        rugged_ref = rugged.branches.create(ref, start_point)
        Branch.new(self, rugged_ref.name, rugged_ref.target)
      rescue Rugged::ReferenceError => e
        raise InvalidRef.new("Branch #{ref} already exists") if e.to_s =~ /'refs\/heads\/#{ref}'/
        raise InvalidRef.new("Invalid reference #{start_point}")
      end