How to get the generated UUID without making another request

[xndyz]

Trying to rename a file before it's uploaded to S3, and using the uuid that's generated in id is perfect, except there's no way to get it from the req, data, originalDoc params. So far I have this, but it generates a distinct ID:

import { type CollectionBeforeChangeHook } from 'payload'
import { generateId } from '@/lib/id'

/**
 * A hook that generates a unique ID as the filename for file uploads.
 * This ensures unique filenames and prevents collisions in cloud storage.
 */
export const useIdAsFilename: CollectionBeforeChangeHook = ({ operation, data }) => {
  if (operation === 'create') {
    data.filename = generateId()
  }
}

Is it possible to use the generated id field?