cloudflare配置workers后预览正常但是Google Chrome无法访问显示403?

//配置如下
const replace_dict = {
    '//': '我的网站.org'
}
addEventListener("fetch", event => {
  let url = new URL(event.request.url);
  url.hostname = "www.我的网站.org";
  let request = new Request(url, event.request);
  event.respondWith(
    fetch(request, {
      headers: {
        'Referer': 'https://www.我的网站.org',
      }
    })
  );
});