The Git add-on can add repositories hosted on a Windows server or Windows network share.
Add a new network share or Windows server hosted repository via the Connect to Git Repository wizard.
Connection conditions to consider:
In the Git Repositories configuration page, edit the repository via Actions > Edit repository.
Under Repository Settings, set Enable Fetches option to
repository hosted on the same server as JIRA.
Make sure that the network folder share name are correct and that the user has at least read access permissions to the network path.