# File lib/capistrano/recipes/deploy/scm/git.rb, line 132
        def checkout(revision, destination)
          git    = command
          remote = origin

          args = []
          args << "-o #{remote}" unless remote == 'origin'
          if depth = variable(:git_shallow_clone)
            args << "--depth #{depth}"
          end

          execute = []
          execute << "#{git} clone #{verbose} #{args.join(' ')} #{variable(:repository)} #{destination}"

          # checkout into a local branch rather than a detached HEAD
          execute << "cd #{destination} && #{git} checkout #{verbose} -b deploy #{revision}"

          if variable(:git_enable_submodules)
            execute << "#{git} submodule #{verbose} init"
            execute << "#{git} submodule #{verbose} sync"
            if false == variable(:git_submodules_recursive)
              execute << "#{git} submodule #{verbose} update --init"
            else
              execute << %Q(export GIT_RECURSIVE=$([ ! "`#{git} --version`" \\< "git version 1.6.5" ] && echo --recursive))
              execute << "#{git} submodule #{verbose} update --init $GIT_RECURSIVE"
            end
          end

          execute.compact.join(" && ").gsub(/\s+/, ' ')
        end