async function test() {
    const undici = require('undici');

    class CustomAgent extends undici.Agent {
        constructor() {
            super({
                keepAliveTimeout: 10,
                keepAliveMaxTimeout: 10
            });
        }
        dispatch(options, handler) {
            console.log("DISPATCH");
            return super.dispatch(options, handler);
        }
    }

    const request = new undici.Request("https://example.org", {
        dispatcher: new CustomAgent()
    });

    // will make an HTTP call and print "DISPATCH"
    await undici.fetch(request);

    // will make an HTTP call, but not print "DISPATCH"
    await undici.fetch(request.clone());
}

test();