how to disable stable-repo-url: googleapis.com

[vovovs]

I want to : helm --stable-repo-url http://192.168.3.3 ...
reason: stable-repo-url kubernetes-charts.storage.googleapis.com not connection, in china.

======= drone log =========
......
Creating /root/.helm
Creating /root/.helm/repository
Creating /root/.helm/repository/cache
Creating /root/.helm/repository/local
Creating /root/.helm/plugins
Creating /root/.helm/starters
Creating /root/.helm/cache/archive
Creating /root/.helm/repository/repositories.yaml
Adding stable repo with URL: https://kubernetes-charts.storage.googleapis.com
Error: Looks like "https://kubernetes-charts.storage.googleapis.com" is not a valid chart repository or cannot be reached: Get https://kubernetes-charts.storage.googleapis.com/index.yaml: net/http: TLS handshake timeout
Error running helm command: init

exit code 1

[aruruka]

I also found out the --stable-repo-url flag with using --upgrade doesn't work, my env is helm v2.14.0.
Afterwards, I just use helm repo remove and add to replace the stable repo url.
But my init process just passed without replacing the default stable repo url, and I found the cache of repo index had been updated normally.
I also wanna know if there is a way to replace the stable repo url in the init step.