Problem starting out with git account (translator)

[Kizito Birabwa <kbirabwa yahoo co uk>]

Hello,

I have recently been given a git account.

However, when I try to follow the git HowTo I get this:

[muwawa@localhost ~]$ ssh -v kbirabwa git gnome org
OpenSSH_5.5p1, OpenSSL 1.0.0c 2 Dec 2010
debug1: Connecting to git.gnome.org [209.132.180.173] port 22.
debug1: Connection established.
debug1: identity file /home/muwawa/.ssh/id_rsa type 1
debug1: identity file /home/muwawa/.ssh/id_rsa-cert type -1
debug1: identity file /home/muwawa/.ssh/id_dsa type -1
debug1: identity file /home/muwawa/.ssh/id_dsa-cert type -1
debug1: Remote protocol version 2.0, remote software version OpenSSH_4.3
debug1: match: OpenSSH_4.3 pat OpenSSH_4*
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_5.5
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: server->client aes128-ctr hmac-md5 none
debug1: kex: client->server aes128-ctr hmac-md5 none
debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(1024<1024<8192) sent
debug1: expecting SSH2_MSG_KEX_DH_GEX_GROUP
debug1: SSH2_MSG_KEX_DH_GEX_INIT sent
debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY
The authenticity of host 'git.gnome.org (209.132.180.173)' can't be established.
RSA key fingerprint is 00:39:fd:1a:a4:2c:6b:28:b8:2e:95:31:c2:90:72:03.
Are you sure you want to continue connecting (yes/no)? no
Host key verification failed.

I have had a look at the git manual on my computer and done some searching on the internet, but fail to make sense of what I have come across so far. Could you advise me where I am going wrong?

Regard,

Kizito