code: private String executeGitCommandReturn(final String... args)
              throws CommandLineException, MojoFailureException {
          return executeCommand(cmdGit, true, null, args).getOut();
      }
docs: Executes Git command and returns output.
  
  @param args
  Git command line arguments.
  @return Command output.
  @throws CommandLineException
  @throws MojoFailureException