It depends on what your deployment system is; it's not always trivial to just change the target git origin to a new server. This seems to be a fundamental weak

It depends on what your deployment system is; it's not always trivial to just change the target git origin to a new server. This seems to be a fundamental weakness in whatever deployment system is used, then. Relying on a single point of failure outside of your organisation's own control for anything critical is always risky, and in this case it seems to be entirely avoidable.