RecyclerView+Paging3 Refresh and scroll to the top

mAdapter.registerAdapterDataObserver(object : RecyclerView.AdapterDataObserver() {
    override fun onItemRangeInserted(positionStart: Int, itemCount: Int) {
        if (positionStart == 0) {
            recyclerView.smoothScrollToPosition(0)
        }
    }
})
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How do I refresh a RecyclerView + PagedListAdapter and scroll to top?