Git two remotes set to the same endpoint, but are on different commits?

Question

Both of my remotes are the same location

So how is it possible that they're at different commits?

Answer 1

Yes, it is possible.

What you see are remote tracking branches, as memorized locally in your repo.

They represent the commit as seen the last time you fetch from those remotes.

If you fetch from origin earlier, and then fetch from heroku more recently, that would explain the difference.