If you are behind a proxy that allows HTTPS connections, you can use github via SSH without problems. To do so, you have to use the great tool connect.c ( http://bent.latency.net/bent/git/goto-san-connect-1.85/src/connect.html). As described in its homepage, this program tunnels a connection using a proxy, to allow SSH to connect to servers using a proxy.
You can configure connect as the ProxyCommand for ssh.github.com and github.com hosts in ~/.ssh/config. You can also set the Port to 443 aswell.
Basicly the process will be:
export PROXY=proxy:80 http_proxy=http://$PROXY wget http://www.taiyo.co.jp/~gotoh/ssh/connect.c -O /tmp/connect.c gcc /tmp/connect.c -o ~/bin/connect cat >> ~/.ssh/config <<EOF Host ssh.github.com github.com Port 443 HostName ssh.github.com IdentityFile $HOME/.ssh/id_rsa ProxyCommand $HOME/bin/connect -H proxy:80 %h %p EOF
git clone firstname.lastname@example.org:keymon/facter.git facter
Easy, isn’t it?
Check connect.c documentation if you need to use an authenticated user in proxy.