Github: readonly access to a private repo

Question

I am developing some private projects on Github, and I would like to add nightly cronjobs to my deployments servers to pull the latest version from github. I am currently do

Answer 1

I know that the questions is about github but maybe for some readers it would be nice to know that this is possible in gitlab and for free. Check https://gitlab.com/help/user/permissions. I spend some time using github without fully serving my purposes. If I knew then I would have started this particular project with gitlab.