upon setting an url like this for backup:
ssh://git@10.1.1.21:4222/user1/opnsense.git
click Test, it will complain about User Name not being set, so fill in User Name with 'git'
then you'll get errors about
```
it-backup authentication failure (git@git@10.1.1.21: Permission denied (publickey).\x0d fatal: Could not read from remote repository. Please make sure you have the correct access rights and the repository exists. )
```
why ask for a full URL if we aren't going to obey the username portion?
the answer is to remove the 'git@' and set the URL to: ssh://10.1.1.21:4222/user1/opnsense.git