Using apt.llvm.org - how to lock specific package version (not just major version)?

Beginners
1

Hi

Using https://apt.llvm.org/ with Ubuntu focal in docker. I noticed that there is only most recent 17.0.x package available there. Today that is 17.0.4.

All earlier versions are not available there any more. I’m checking: Index of /focal/pool/main/l/llvm-toolchain-17/

I’d like to lock package version in Dockerfile to something like “17.0.3”, but currently I can only lock to “17” meaning I might be getting all later versions. This is not desired.

Is this by-design or I’m missing something?

Thanks!