log("%d entries added", cnt);
final String msg = "snapshot";
final RevCommit head = git.commit().setMessage(msg).call();
final BundleWriter bw = new BundleWriter(git.getRepository());
bw.include(sanitizeHeadRef(bundleRef), head);
final FileOutputStream out = new FileOutputStream(bundle);
try {
bw.writeBundle(createProgressMonitor(), out);
} finally {