Although git.sip-router.org is maintained, the official repository of record is now on Github. Have you tried cloning that?
Dear Officer,
I have been able to download the kamailio package in the past but since yesterday i am not able to download the same package and getting error as shown below.
[root@Server ~]# git clone git://git.sip-router.org/kamailio kamailio
Initialized empty Git repository in /root/kamailio/.git/
fatal: read error: Connection reset by peer
Regards,
Farhan Tariq.