When using CF Workers + JS, I was able

use console_error_panic_hook;
use futures_util::TryStreamExt;
use worker::{event, Context, Env, HttpRequest, Response, Result};

const S3_URL: &str = "https://overturemaps-us-west-2.s3.us-west-2.amazonaws.com/release/2025-05-21.0/theme=buildings/type=building/part-00006-0df994ca-3323-4d7c-a374-68c653f78289-c000.zstd.parquet";

#[event(fetch)]
async fn fetch(_req: HttpRequest, _env: Env, _ctx: Context) -> Result<Response> {
    console_error_panic_hook::set_once();

    let client = reqwest::Client::new();
    let response = client
        .get(S3_URL)
        .send()
        .await
        .map_err(|e| worker::Error::RustError(e.to_string()))?;

    let mut headers = worker::Headers::new();
    headers.append("Content-Type", "application/octet-stream")?;
    headers.append("Transfer-Encoding", "chunked")?;

    let stream = response
        .bytes_stream()
        .map_err(|e| worker::Error::RustError(e.to_string()));

    Response::from_stream(stream).map(|resp| resp.with_headers(headers))
}