About your SSL error, have you tried to clone from an unencrypted place first? It should be possible to set up something hosted using the plain git:// protocol or even using http://. Then you can try connecting to it without SSL, maybe it will allow to investigate where the problem lies.
on a related note, please don’t use the warning icon for success dialogs, use the Info icon instead. Else, great project, looking forward! And super Bonus points for the Figma prototype!