If the Git server and Jira server are installed on the same server, only the path to the Git repository is needed. The URL and the access credentials to the Git server will only be needed if it is located on another server.
Download the Git app installer package from Atlassian Marketplace:
Use manual install if you have a specific version of Git Integration for Jira downloaded from the marketplace or sent by some other file sharing method.
For upgrade installations it can be easily done via Universal Plugin Manager (Manage Add-ons).
There are two ways to do this:
Watch the video below on how to update your version of Git Integration for Jira app via UPM (Universal Plugin Manager).
The updating process is demonstrated in two chapters: