stale-app-link.js

// If the user has been on the page for over 12 hours, the next link
// click will do a full page transition to get new code
import React from "react";
import { BrowserRouter, useLocation } from "react-router-dom";

let hour = 3600000;

export default function StaleAppRouter(props) {
  let [isStale, setIsStale] = useState(false);

  useEffect(() => {
    let id = setTimeout(() => {
      setIsStale(true)
    }, hour * 12)
    return () => clearTimeout(id)
  }, []);

  return <BrowserRouter forceRefresh={isStale} />
}

// now replace your <BrowserRouter /> with a <StaleAppRouter />