On this page: https://alt.fedoraproject.org/prerelease/index.html there are links named "Verify" that link to static checksum files on getfedora.org. For example, on the Fedora Everything netinst (at the bottom), next to the Download there is a Verify hyperlink, which points to https://getfedora.org/static/checksums/Fedora-Everything-37_Beta-1.5-x86_64-CHECKSUM. This link is broken.
I see this with the Verify link under Cloud Based Images for the raw image, qcow2 image, Vagrant VBox image and Vagrant libvirt image, as well as the aforementioned Everything link.
Now that Fedora 37 Beta has been announced, its probably too late but to fix it ASAP.
That should now be fixed. Thanks for reporting it.
Metadata Update from @kevin: - Issue close_status updated to: Fixed - Issue status updated to: Closed (was: Open)