I mean replay attack and freeze attack as described in https://doi.org/10.1145/1455770.1455841 . It's very likely that I'm not up to date on mitigations in individual package managers.
Well, that's how software is, but that article is from 2008 and things have gotten a lot better in the meantime (I think archlinux wasn't even signing their packages back then).
If the distribution's private keyring isn't compromised and you don't have third-party repos, your packages are as trustworthy as your distribution team (and upstream).