XZ backdoor in a nutshell

https://lemmy.zip/post/12859629

XZ backdoor in a nutshell - Lemmy.zip

I have heard multiple times from different sources that building from git source instead of using tarballs invalidates this exploit, but I do not understand how. Is anyone able to explain that?

If malicious code is in the source, and therefore in the tarball, what’s the difference?

I think it is the other way around. If you build from Tarball then you getting pwned