}
sleep 1 if $last_touch == time;
-system "git checkout master" and die $!;
+system "git checkout master" and exit 1;
exit;
die <<EOT;
Usage: patch-update [OPTIONS]
---gen[=DIR] Inlcude generated files.
---skip-check Skip the master-branch, clean-checkout check.
+--gen[=DIR] Include generated files. Optional dest DIR overrides "patches".
+--skip-check Skip the check that ensures starting with a clean master branch.
EOT
}