You can fetch the data via tanstack query with useQuery. Then you can invalidate the query or use refetch

i don't get it

your talking about using fetch on browser, you would need to manually re-run the fetches with no cache: https://developer.mozilla.org/en-US/docs/Web/API/fetch#cache (or use SWR/react query to make nicer hooks arround it - but that still assumes that browser isnt caching)