[systemd-devel] Verify the gpg signature of the given tag

[poma]

$ git tag --verify v229
object 95adafc428b5b4be0ddd4d43a7b96658390388bc
type commit
tag v229
tagger Lennart Poettering <lennart at poettering.net> 1455208658 +0100

systemd 229
gpg: Signature made Thu 11 Feb 2016 05:37:38 PM CET using RSA key ID 9C3485B0
gpg: Good signature from "Lennart Poettering <lennart at poettering.net>"
gpg:                 aka "Lennart Poettering <lennart at poettering.de>"
gpg:                 aka "Lennart Poettering (Red Hat) <lpoetter at redhat.com>"
gpg:                 aka "Lennart Poettering (Sourceforge.net) <poettering at users.sourceforge.net>"
gpg: WARNING: This key is not certified with a trusted signature!
gpg:          There is no indication that the signature belongs to the owner.
Primary key fingerprint: 63CD A1E5 D3FC 22B9 98D2  0DD6 327F 2695 1A01 5CC4
     Subkey fingerprint: 16B1 C4EE C0BC 021A C777  F681 B63B 2187 9C34 85B0


How to do this without "gpg: WARNING:" part?