Function remember_coroutine_scope 

pub fn remember_coroutine_scope() -> CoroutineScope

A coroutine scope bound to this call site. Compose’s rememberCoroutineScope.

let scope = remember_coroutine_scope();
Button("Refresh").on_click(move || scope.launch(async move {
    let fresh = with_worker(fetch).await;
    items.set(fresh);
}));