const response = await fetch('https://github.com/login/oauth/access_token', {
    method: 'POST',
    headers: {
      'Content-Type': 'application/json',
      'Accept': 'application/json',
    },
    body: JSON.stringify({
      client_id: '$$$',
      client_secret: '$$$$$$$$$$',
      code,
    }),
  });