We have a script that reads the release versions files to compare them to the downstream versions we have in Endless OS. For example, https://download.gnome.org/teams/releng/46.6/versions. Starting a couple days ago (likely with the CDN77 move), these began to return 404s. For example:
$ curl -IL https://download.gnome.org/teams/releng/46.6/versions
HTTP/2 301
date: Sun, 17 Nov 2024 04:37:16 GMT
content-type: text/html
content-length: 169
location: https://download.gnome.org/teams/releng/46.6/versions/
expires: Sun, 17 Nov 2024 04:37:15 GMT
cache-control: no-cache
cache-control: no-cache, no-store, must-revalidate
x-77-nzt: EwgBVBE/kAFBCAGP9DMTAUEIAZySO+gBIQ
x-77-nzt-ray: 3443d51eb818aa73fc72396799d4241a
x-77-cache: MISS
server: CDN77-Turbo
x-77-pop: denverUSCO
HTTP/2 404
date: Sun, 17 Nov 2024 04:37:16 GMT
content-type: text/html
content-length: 153
x-77-nzt: EwgBVBE/kAFBCAG5tA0KAUEIAZySO98BgQ
x-77-nzt-ray: 3443d51eb818aa73fc723967ab27e723
x-77-cache: MISS
server: CDN77-Turbo
x-77-pop: denverUSCO
That initial redirect seems bogus. The version files are simple <suite>:<module>:<version> files, not separate directories.