The issue relates to the file serving from GitHub sources.

I guess the issue is specially for my chrome, edge browser and in the USA server's network, because I am able to download the raw file using the same link in Tor Browser & Chrome browser of mobile.

The issue is not in server, because server network can download the file successfully, only the Kubernetes init container is not able to download the file. Don't know why 😢 .

I tried to manually execute the same command inside the shell of the container, and its confirmed that it is failing inside it.

Seems like some network issue within the container. Because, even ping fails to resolve the IP for google.com & github.com

✅ I found the solution. My Kubernetes was having such warning on clickhouse pod.

Nameserver limits were exceeded, some nameservers have been omitted, the applied nameserver line is: 6X.XX.XX.2XX 66.XX.XXX.21X 6X.XX.XX.5X

I removed redundant DNS nameservers from

/etc/resolv.conf

and only kept the following content in that file

nameserver 1.1.1.1
nameserver 8.8.8.8

And Restarted the cluster. It solved. 🎉