I was following the directions here to set up Jenkins (a fork of Hudson) on Windows with Git and Github: http://mahdi.mp/setting-up-a-ci-server-using-jenkins-msbuild-and-github-on-a-windows-server/
I kept getting stuck at “Cloning repository” with no errors and no activity.
Here was my gotcha: Jenkins does not support passphrases with your SSH keys.