[SR-Users] Git Error on Kamailio-3.3 Install

[SamyGo]

Hello,
I'm setting up new Kamailio 3.3 from git ref-link:
http://www.kamailio.org/wiki/install/3.3.x/git
I'm using CentOS 5.8 and when I execute the line

# git checkout -b 3.3 origin/3.3

it gives me error.

fatal: git checkout: updating paths is incompatible with switching branches.
Did you intend to checkout 'origin/3.3' which can not be resolved as commit?

Can I skip it ! o need to do something about it !!

Regards,
Sammy G.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.sip-router.org/pipermail/sr-users/attachments/20120626/70a06b3c/attachment.htm>