Unable to access git repository

Hello, I was trying to clone git repository from http://git.osmocom.org/libgtpnl/but got an error : remote: An error occurred while reading CGI reply (no response received)fatal: unable to access 'http://git.osmocom.org/libgtpnl/': The requested URL returned error: 502 I can't open http://git.osmocom.org/libgtpnl/ in browser either. It said 'An error occurred while reading CGI reply (no response received)'. Is my url to git repository wrong ? Thanks, WangSS