very strange behavior related to fetch()

run this code:
```ts
import { FastResponse, serve } from "srvx";

async function searchImageWithGoogle(imageUrl: string) {
const imgRes = await fetch(imageUrl);

const form = new FormData();

form.set("encoded_image", await imgRes.blob());

form.set("sbisrc", "Microsoft Edge 142.0.3595.53 (Official) Linux");

const res = await fetch("https://www.google.com/searchbyimage/upload", {
method: "POST",
body: form,
headers: {
"user-agent":
"Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/142.0.0.0 Safari/537.36 Edg/142.0.0.0",
},
});

return res.url;
}

serve({
async fetch() {
return FastResponse.redirect(
await searchImageWithGoogle("https://picsum.photos/200/300")
);
},
});
```
in deno and cloudflare you get "Search by image is unavailable. Please try again in a few hours."
in bun and node it works fine
is there something deno and cloudflare do/don't that is different from bun and node? when i remove sbisrc, bun and node start behaving like deno and cloudflare