Script to clone subreddit to Lemmy?

Has anyone made or found a script to scrape a subreddit and import it to a Lemmy community? There are a handful of smaller subs that I’d like to mirror over to my instance (with author attribution) but haven’t found anything that works yet. github.com/rileynull/RedditLemmyImporter looks promising but links to a non-functioning Python script (tries to use Pushshift, which isn’t working at the moment).