I am an admin and got notified that someone pushed a new branch called 'refs/remotes/upstream/release/5.2.2'

But when I went to look at the branches, it didn't show it in existence, and it is different from the release/5.2.2 branch that already exists


It is also listed as refs/remotes/upstream/release/5.2.2 in the URL

How do I delete it if I can't find it?