I recently made such a mistake - the first ever - on a post I meant for another community and did the Edit thingy. Someone later told me to just leave it as it is. And that action brought in the hive watchers.
I think its just best to leave the error the way it is. And your advice about adding a tag up saying...
Oops, I screwed up here, but stay tuned, because the post I was meant to post will be added here soon!
...makes sense too. But I will make sire to be more careful than ever. I Must confess I admire your feat of not having one erroneous post...🙌🙌🙌
I celebrate thy grace.🙇