将https GET请求路由到特定地址

Please consider this small Go question.

package main

import (
    "fmt"
    "net/http"
    "time"
)

func main() {

    timeout, _ := time.ParseDuration("30s")
    client := http.Client{
        Timeout: timeout,
    }

    url := "https://status.azure.com"
    req, err := http.NewRequest("GET", url, nil)

    checkErr(err)
    fmt.Println("Status", response.StatusCode)

}

func checkErr(err error) {
    if err != nil {
        fmt.Println("Got error", err)
    }
}

I've inherited something similar, and need to route this https GET request to a specific IPV4 address.

I've read this, but cannot get to work with the semantics in here, a bit confused, and I am not making the connection. Is there a simpler way to achieve this? thanks!