Upgrading Git Connector
As mentioned in System requirements, the Git Connector version number must match the Helix Core Server version number.
If you are Upgrading Git Connector, do so before upgrading Helix Core Server. For example, first upgrade the Git Connector to 2019.2, and then upgrade Helix Core Server to 2019.2.
Upgrade the Helix Core Server as soon as possible after upgrading the Git Connector. Otherwise, the Polling Repos feature will not work as expected. For details, see Polling and the server spec.