Connection time out to github with ssh

[ML-TANGO]

If you experiened following errors

$ git push
ssh: connect to host github.com port 22: Connection timed out
fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.

Just run the followig command

$ ssh -T -p 443 git@ssh.github.com
The authenticity of host '[ssh.github.com]:443 ([20.200.245.248]:443)' can't be established.
ECDSA key fingerprint is SHA256:p2QAMXNIC1TJYWeIOttrVc98/R1BUFWu3/LiyKgUfQM.
Are you sure you want to continue connecting (yes/no/[fingerprint])? yes
Warning: Permanently added '[ssh.github.com]:443,[20.200.245.248]:443' (ECDSA) to the list of known hosts.
Hi hongsoog! You've successfully authenticated, but GitHub does not provide shell access.

Please refer to the following troubleshooting article for details on this :
*Using SSH over the HTTPS port