On Sun, Dec 22, 2013 at 9:03 AM, Richard W.M. Jones <rich@annexia.org> wrote:

(1) Putting a project on github increases the number of people
submitting bug reports and pull requests using github's proprietary
interface. This is annoying because you need some way to tell them
not to do this, and to deal with people who do it anyway. (libguestfs
-- hosted on github -- has an all-caps notice on the front page:
http://github.com/libguestfs/libguestfs)

Click the settings icon at the middle right (for the individual repo, not the general account settings at the top right). There, you can disable the Issues and Wiki features. I don't know any way to prevent submission of pull requests. (I don't agree that these features should be avoided. I think GitHub is by far the best development tool set currently available.)