I'm looking for a way to get a Webhook on someone else's repository so that when it gets updated I get a web request like if it was my own.
I had the idea of forking the project for myself and then adding a webhook so that when the upstream gets updated I can get a notification. However, it doesn't appear like any of the event options can do this.
Am I missing something?
Here's the github event page by the way: https://developer.github.com/webhooks/
You are not missing any event: the usual solution is to ask the upstream repo maintainer to add your email to the email service notification, in order to receive an email for each commit pushed.
The other alternative (if you cannot register any webservice directly on the upstream repo) is to set up a polling service doing a regular pull of the upstream repo and sending you a notification.