Repos published from OBS do not normalize URL

[ggardet]

Issue Description

On a private OBS instance, we create repositories for multiple distributions, including Ubuntu 20.04 and 22.04.
While the repo on OBS server works, it breaks when it is synced on an external mirror.
The reason seems to be the repos published from OBS do not normalize URL and the server used on the mirror do not normalize the URL either (while OBS server does the normalization when serving the files).

apt download mypackage complains:

E: Failed to fetch https://<mirror_path>/focal/./arm64/mypackage.deb  404  Not Found [IP: xxx.xxx.xxx.xxx 443]

(note the ./ in the path)

Expected Result

URL in repos should be normalized. I think this should happen before the generation of the file Packages.

How to Reproduce

Create a Ubuntu repo, move it to a webserver without URL normalization and try to download some packages with curl -v --path-as-is XYZ

Further Information

• Latest release: 2.10