error: mesa: signature from "CachyOS <admin@cachyos.org>" is invalid
:: File /var/cache/pacman/pkg/mesa-1:24.3.1-4-x86_64_v4.pkg.tar.zst is corrupted (invalid or corrupted package (PGP signature)).
I tried different mirrors by editing the files:
/etc/pacman.d/cachyos<-,v3, v4>-mirrorlist
System update hadn’t solved the issue.
Interestingly, I tried ranking the mirrors and keyring refresh before creating this issue, using the buttons in CachyOS Hello → Apps / Tweaks: