import hudson.scm.SCM;
import jenkins.model.Jenkins;
import jenkins.triggers.SCMTriggerItem;
import jenkins.triggers.SCMTriggerItem.SCMTriggerItems;
import com.cloudbees.jenkins.GitHubRepositoryNameContributor;
import hudson.plugins.git.GitSCM;

for (Item job : Jenkins.get().getAllItems(Item.class)) {
  SCMTriggerItem triggerItem = SCMTriggerItems.asSCMTriggerItem(job)
  if (triggerItem != null) {
    println(triggerItem.asItem().getFullName() + (triggerItem.getSCMs().isEmpty() ? ' is empty' : ' is NOT empty'))
    if (triggerItem.getSCMs().isEmpty()) {
      println('Empty SCM for job: ' + triggerItem.asItem().getFullName())
    }
    // does nothing because it returned an empty collection...
    for (SCM scm : triggerItem.getSCMs()) {
          print('hi ' + scm)
    }
  }
}