jetring-apply - apply a changeset to a keyring
       jetring-apply keyring.gpg changeset
       Given  an  existing  gpg  keyring  file  and  a  changeset, applies the
       changeset to the file.
       This is a low-level command that is used by  a  higher  level  command,
       jetring-build,  to  generate a keyring. It rarely needs to be called by
       hand.
       Joey Hess, <joey@kitenet.net>.
       jetring(7) jetring-review(1) jetring-build(1)