Building this project tests sparo command outputs with a real GitHub repo, which is the "build-test" branch of "sparo" itself.
lib/start-test.js is run after building the project. This scripts generate the output text files under temp/etc. In local builds, those files are copied to etc folder. During a CI build, the files under these two folders are compared and the CI build fails if they are different. This ensures that files under etc folder must be up to date in the PR, and people who review the PR must approve any changes.
Run rush build -t sparo-real-repo-test to regenerate files under etc folder and commit them into Git.