Ubuntu 24.04 apt-get update returns a 400
I did see the question here: https://support.mozilla.org/en-US/questions/1448269
And the answer is not useful, mainly because apt-get does not use a browser to update its cache.
Err:16 https://packages.mozilla.org/apt mozilla/main all Packages
400 Bad Request [IP: 34.160.78.70]
E: Failed to fetch https://packages.mozilla.org/apt/dists/mozilla/main/binary-all/Packages 400 Bad Request [IP: 34.160.78.70 443] E: Some index files failed to download. They have been ignored, or old ones used instead.
Using curl/wget/httpie works as intended, just apt-get update fails.
Any help would be appreciated.