[This line](https://github.com/operable/greenbar_markdown/blob/master/c_src/Makefile#L87) uses git network protocol and require most environments to allow outgoing `tcp/9418`. It would be better if we move this to `ssh` or `https`
This line uses git network protocol and require most environments to allow outgoing
tcp/9418.It would be better if we move this to
sshorhttps