I\'m not sure, but I have a vague memory of creating a github pull request with \"Issue 4\" or something in the title, and it automatically attached itself to Issue 4 in the
If you have 2FA enabled, you can use pass the token with HTTPie:
http POST \ https://api.github.com/repos///pulls \ issue=2 head=issue_2 base=master "Authorization:token PUTAUTHTOKENHERE"
This will use the branch issue_2 to convert issue #2 into a pull request.
issue_2