The ~~[recent change to introduce CI](https://github.com/dotnet/installer/pull/15007)~~ [recent pipeline added to mirror changes to the security partners repo](https://github.com/dotnet/source-build/blob/main/eng/source-build-release-mirror.yml) needs to be updates to work in the VMR. There may be other changes needed with release automation - e.g. https://github.com/dotnet/source-build/blob/main/eng/source-build-pre-release.yml