in app/lib/RepoSnapshot.scala [200:204]
def diagnostic(): Future[Diagnostic] = for {
snapshots <- snapshotOfAllAvailableCheckpoints()
} yield Diagnostic(snapshots, mergedPRs.map { pr =>
PRCheckpointDetails(pr, snapshots.filter(s => activeCheckpointsByPullRequest(pr).contains(s.checkpoint)), repoLevelDetails.gitRepo)
})