GitHub webhooks not working

[Jonathan Leroy]

Hi,

I've setup a GitHub webhook according to the documentation at
https://copr.fedorainfracloud.org/coprs/jleroy/PlexMediaPlayer/webhooks/.
When a push my commits to GitHub, a POST request is sent to the
webhook URL by GitHub and and HTTP 200 response received according to
GitHub logs. But nothing happens on Copr's side.

However, if I trigger the build manually using the "Rebuild" button,
everything works fine.

Any idea?