Version Control (Git) How do I bring back the "latest pull" changes window

Hi Guys,

I love PyCharm!  In the morning I tend to review my teams code so I pull in all of the changes and then start ⌘D diffing the files.  But alas I hit  ⌘W and closed the Changes window and not the diff window.  How the heck do you bring this jem back??

Thanks!