Sometimes you end up in a GitHub organization with many repos you don't need to watch (but can't leave the organization). To mass unsub from all repos: 1) visit https://github.com/watching, 2) open the inspector console (command+alt+j) and paste in the code below, 3) change 'name_of_org" to the name of the organization you want to unsubscribe fr…

unwatch_all.js

var unwatchme = 'name_of_org';
jQuery('.subscription-row').each(function(){
  if (jQuery('a[href*="' + unwatchme + '"]', jQuery(this)).length > 0) {
    jQuery('.js-unsubscribe-form .minibutton', jQuery(this)).click();
  }
});