how do I switch to a remote branch in Xcode 15

I know how to switch to a local branch in Xcode 15

but how do I change to a remote one. the dropdown list doesn't show remote branches. Typing the branch name into the filter search bar doesn't help

Use the Remotes list in the Source Control navigator.

Those are all remote-tracking branches (i.e. origin/album-sort-like-finder and so on). To switch to one, use the contextual menu; the first item is Switch. Note that you will now have a detached head, as in reality it is impossible to "really" check out a remote-tracking branch.