JBehave uses Git to manage its source code.
Git allows web access:
http://github.com/jbehave/jbehave-web
git clone git://github.com/jbehave/jbehave-web.git
git clone ssh://git@github.com/jbehave/jbehave-web.git
Git support HTTP protocol for cloning, which normally is allowed in corporate firewalls
git clone https://github.com/jbehave/jbehave-web.git
You may need to set http.proxy via git-config.