client-go: Can't override config values

I am loading my local kubeconfig which contains multiple clusters and contexts. The default context is “prod” and one of the config values I want to override is the CurrentContext

	clientConfig := clientcmd.NewNonInteractiveDeferredLoadingClientConfig(
		&clientcmd.ClientConfigLoadingRules{ExplicitPath: "/Users/me/.kube/config"},
		&clientcmd.ConfigOverrides{
			CurrentContext: "stage",
		})

	rawConfig, _ := clientConfig.RawConfig()
	log.Printf(rawConfig.CurrentContext) // outputs "prod" instead of "stage"

When I inspect RawConfig() the current context is still “prod” instead of “stage”. Why does the config override not work?

Also how does the override for AuthInfo etc. work? The override accepts only a single AuthInfo whereas the configuration contains a map of AuthInfo etc.