Automatically pull from git extension

I have a problem…
I am working with a person that is about as tech savy as a rock. For reasons I decided that we will syncing the notebook via github. I don’t want the other person to need to manually pull within the git extension, because he will mess it up and will shout at me… So I would like to have some software pull in regular intervals.

Do you know if there is some extension already, or if I have to roll my own?