While trying to update Omarchy I ran into a problem where I had an expired key (specifically for Levente/anthraxx while trying to verify the libseccomp package).
I tried manually running a system update with pacman -Syu but that didn't work. I eventually found a thread on reddit and another on the arch wiki
talking about the pacman keyring. So eventually I had to run pacman-key --refresh-keys. This took awhile but eventually I saw a message that
Levente's key was updated. I then ran pacman -Syu again which succeeded (Update > Omarchy was not working). However, I think the dotfiles were so
bad off because of the Hyprland upgrade to v2. Eventually I had to run omarchy-reinstall, which did work after I ran Update > Omarchy one last time.
It ended up not being a big deal, however, I thought this tidbit might get you out of a jam in the future.