Code Coverage Badge not pointing to correct branch

Description

In my private Github repo, the code coverage badge is supposed to be pointing to master. But the percentage updates to whatever the latest commit is on any branch in the repo. How do I get this to only update when master is updated?

Repository

Private repo

Versions

Chrome: Version 81.0.4044.122 (Official Build) (64-bit)
Linux: Ubuntu 18.04

Additional Information

The URL for the badge is simply copied from the settings in my codecov:

https://codecov.io/gh/bitfount/<REPO_NAME>/branch/master/graph/badge.svg?token=<TOKEN>

Hi @amin-nejad, could you DM me the name of your repository so we can dig in a little more here?