$ git init
$ git add .
$ git commit -m 'some commit message'
$ git remote add origin git@urlToRepo

The authenticity of host 'gitlab.tubit.tu-berlin.de (xxx.xxx.x.xxx)'
can't be established.
RSA key fingerprint is f7:f3:1b:ba:94:16:20:09:71:5c:cf:3c:36:15:a8:f5.
Are you sure you want to continue connecting (yes/no)?

Warning: Permanently added 'gitlab.tubit.tu-berlin.de,xxx.xxx.x.xxx'
(RSA) to the list of known hosts.