My use case for this is to have a script that lists my outstanding
patches so I can ping people for review or merge if there's no
movement for a long time.
Signed-off-by: Lars Wirzenius <liw@liw.fi>
Sets the current branch's upstream to point to the given patch.
This allows for pushes to update the patch.
When opening a patch, if the current branch already has an upstream,
it isn't updated automatically. This is why this command exists.