Timing-Out Connection in Version Control #1315

When I executed Pull in version control sector, it kept loading without any response. Then I ran ssh git@github.com in built-in terminal, returning as follows:

It seems like the problem of port 22 because it also happened when I used Git in iSH app and it found out to be so.

I intended to change the port from 22 to 443, but I did not know which config files or setups should be operated, since the version-control configuration of Code app is very different from that in usual devices with Git. Or just let me know if there are other alternative solutions.