"fetch" fetches from the URL you set in the card/Yubikey. If you put the public key on an HTTP server and put the URL in the Yubikey (with the "url" command aft

"fetch" fetches from the URL you set in the card/Yubikey. If you put the public key on an HTTP server and put the URL in the Yubikey (with the "url" command after enabling "admin" commands), you can fetch it with "fetch". Getting the public key out from an OpenPGP smartcard otherwise is not supported by the protocol it uses. That is frustrating that it wasn't included in the procotol, but I've gotten over it. After you've imported the public key, getting the private key stubs is a matter of checking the status of the card with `gpg --card-status`. The stubs are added then. If you have another machine that has the public key, you can export it with `gpg --export -a $key_identity`, and import it with `gpg --import < $exported_public_key_file`. Otherwise, if you don't hold another copy of the public key, the only option left might be to make a new keypair and be careful to not lose all copies of the public key again. Also, if you backup the private key, you can get the public key from it by importing it somewhere.