Issue

I’m using a different proxy on my Controller and my Agent.

Environment

• CloudBees CI (CloudBees Core) on modern cloud platforms - Managed Master
• CloudBees CI (CloudBees Core) on traditional platforms - Client Master
• CloudBees Jenkins Platform - Client Master
• CloudBees Jenkins Distribution
• Jenkins LTS

Resolution

The Git Plugin does not support this specific use case.
It will always use the proxy information of the Controller to perform a checkout.
See JENKINS-31464 for more details.

You can still bypass the Controller proxy on an agent by deploying on each agent a .gitconfig file that will override the configuration from the Controller.

References