code: func gitWrapperScript() []byte {
  	scriptTemplate := `#!/usr/bin/env {shell}
  
  # The MIT License (MIT)
  # Copyright (c) 2013 Alvin Abad
  
  if [ $# -eq 0 ]; then
      echo "Git wrapper script that can specify an ssh-key file
  Usage:
      git.sh -i ssh-key-file git-command
      "
      exit 1
  fi
  
  # remove temporary file on exit
  trap 'rm -f {tmp_dir}/.git_ssh.$$' 0
  
  if [ "$1" = "-i" ]; then
      SSH_KEY=$2; shift; shift
      echo -e "#!/usr/bin/env {shell}\n \
      ssh -i $SSH_KEY \$@" > {tmp_dir}/.git_ssh.$$
      chmod +x {tmp_dir}/.git_ssh.$$
      export GIT_SSH={tmp_dir}/.git_ssh.$$
  fi
  
  # in case the git command is repeated
  [ "$1" = "git" ] && shift
  
  # Run the git command
  {git_binary} "$@"
  
  `
  	replacer := strings.NewReplacer(
  		"{shell}", shell,
  		"{tmp_dir}", strings.TrimSuffix(gos.TempDir(), "/"),
  		"{git_binary}", gitBinary,
  	)
  	return []byte(replacer.Replace(scriptTemplate))
  }
docs: // gitWrapperScript forms content for git.sh script