Hm, actually no, because of this in the specfile:
---
# Warn the user that Jetty needs restarting. This can't be done automatically due to a bug in Jetty's init script.
# See http://www.rudder-project.org/redmine/issues/2807
---

The part where the restart would normally be done has been replaced by a comment to warn the user that the webapp should be restarted.