CF Builder 2018 "check for updates" fails with "no repository found"

If one uses the Help>Check for Updates feature in CFBuilder 2018 beta, it returns an error:

No repository found at https://cfdownload.adobe.com/pub/adobe/coldfusion/PR/cfb4standalonerepo.

Of course, I realize that today there are no such updates for the beta, only 3 days old, but over time people will think to check this, and it seems there ought to be a repo with whatever it needs so that it gets no error, but instead causes this to return the message that there are no updates, like we would get in production CFB deployments between available updates.