Comment by Xylakant

On an internal VCS this may be a deliberate decision: Secrets need to be stored somewhere and a cost-risk analysis can result in "this is the best place that we currently have at our disposal". That obviously won't fly if your threat model includes "adversary may attack our github account from within GH" or if you ever plan on opening up that repo, but if neither applies this may be the best place to store some sorts of secrets.