Content-Length header should be ignored by fetch about undici HOT 4 CLOSED

diff --git a/lib/web/fetch/index.js b/lib/web/fetch/index.js
index 5fbef495..34de3aa7 100644
--- a/lib/web/fetch/index.js
+++ b/lib/web/fetch/index.js
@@ -1432,7 +1432,7 @@ async function httpNetworkOrCacheFetch (
   //    `Content-Length`/contentLengthHeaderValue to httpRequest’s header
   //    list.
   if (contentLengthHeaderValue != null) {
-    httpRequest.headersList.append('content-length', contentLengthHeaderValue, true)
+    httpRequest.headersList.set('content-length', contentLengthHeaderValue, true)
   }

   //    9. If contentLengthHeaderValue is non-null, then append (`Content-Length`,