Wow! You’ve broken the system! If you could email firstname.lastname@example.org or create a ticket on Happyfox they will be able to help you (usually take 24-48 hours to get back to you). For now, maybe you could try opening the terminal full-page or pressing Ctrl+C (Linux stop running command shortcut - I think! Don’t know if it works here)
It’s called polite with reference to Ctrl + Z, another command used to kill a process in a terminal.
Ctrl+C sends SIGINT which will interrupt the application. Usually causing it to abort, but this is up to the application to decide.
Ctrl+Z sends SIGTSTP to a foreground application, effectively putting it in the background, suspended. This is useful if you need to break out of something like an editor to go and grab some data you needed. You can go back into the application by running fg (or %x where x is the job number as shown in jobs ).
Anyway, check if that clone url is correct, or refresh your app by launching a new terminal. Maybe git having issues with clne command which is weird because i used git clone a lot and this error never happend.