Using version 0.0.8
1) Click "credentials" button, then "Global credentials", then "Add Credentials".
2) Choose "SSH Username with private key, scope Global (or System), Username (default): jenkins, Private Key: paste a generated Private SSH key which has access to your Git repo.
3) Click OK
4) Navigate to Manage Jenkins > Configure System to update SCM Sync configuration settings.
5) Switch SCM to "git", and set Repository URL.
6) Click Save.
SCM Sync status errors.