KingCrunch [1] filed an orphan request for johnny-git [2]: Somebody marked is as "outdated" for the same reason.

Appears to be unmaintained, and no longer installs from AUR... ==> Verifying source file signatures with gpg... johnny.desktop ... FAILED (unknown public key 8C004C2F93481F6B) ==> ERROR: One or more PGP signatures could not be verified! -> error making: johnny-git

[1] https://aur.archlinux.org/account/KingCrunch/ [2] https://aur.archlinux.org/pkgbase/johnny-git/