GitHub: Create branch from an issue

Is there a way to create a branch from an issue from Github's website?

Once I select an issue, is there a way to create a branch from the site and then clone it? Or an alternative?

Coming across this question in October 2022, there now is a way to do that directly in Github! This functionality is apparently in public beta right now and subject to change, according to the GitHub documentation about it.

To try this feature, just navigate to an issue and open it. Then, on the panel on the right side of the page, you can find a clickable button to "Create a branch". See the attached screenshot for an example.