[root@sv02 cocos2d]# git clone https://github.com/andyque/Cocos2DBookSource.git Cloning into 'Cocos2DBookSource'... error: SSL certificate problem, verify that the CA cert is OK. Details: error:14090086:SSL routines:SSL3_GET_SERVER_CERTIFICATE:certificate verify failed while accessing https://github.com/andyque/Cocos2DBookSource.git/info/refs?service=git-upload-pack fatal: HTTP request failed [root@jsv02 cocos2d]# git config --global http.sslVerify false [root@sv02 cocos2d]# git clone https://github.com/andyque/Cocos2DBookSource.git Cloning into 'Cocos2DBookSource'... remote: Counting objects: 2973, done. remote: Compressing objects: 100% (1708/1708), done.