Jenkins build on changes in github branch only.

[MT]

This might be very basic question, something that is puzzling me.

If i want to build my project whenever a change happens in my github branch how do it do that?

What have i done :

    * add web hook for jenkins in my github "http://jenkins_url/github-webhook

   * add build trigger to build only when a change is pushed to github

what's happening today : Any change in any branch triggers this build

Can i use url trigger plugin workaround ? Yes but i think this can be and am sure has been solved in a better manner before.

Please advise

[MT]

forgot to mention the Jenkins slaves in this case are dynamic ( coming from a a cloud infrastructure provider). so i think one issue is no local cache here.