How to pass additional xcodebuild flags through Xcode build settings

I am wondering how to pass -clonedSourcePackagesDirPath flag via Xcode build settings. I need it persisted in xcodeproj file so it is available on my CI as well as on my local machine. The idea is to have SPM clone packages in my project folder so that CI is not always downloading them and to avoid redownloading them on my local machine whenever I delete derived data folder. -clonedSourcePackagesDirPath is xcodebuild flag and it is easy to pass it through command line. I was following this article on how to set it up but it does not address my case https://uptech.team/blog/swift-package-manager