Sometimes it makes sense to act smart rather than brute-force.
For example, when Intel makes another #MKL release and you get version like "2026.0.0", and you need to figure out the remaining "-n" suffix for the .deb packages. And you really don't want to start a Debian container to figure that out.
Well, you could just keep brute-forcing until you find the right number. Or you can figure out that the index URL is https://apt.repos.intel.com/oneapi/dists/all/main/binary-amd64/Packages.bz2 and find out that the correct number is 908…
Thanks to @thesamesam for finding the spec. My search-engine-fu would only come up with completely useless guides to newbies. Even after adding the f-word.
The spec's at https://wiki.debian.org/DebianRepository/Format.