Steffen Prohaska [off-list ref] writes:
Pushing a short refname used to create a new ref on on the
remote side if it did not yet exist. If you specified the wrong
branch accidentally it was created. A safety valve that pushes
only existing branches may help to avoid errors.
On the other hand, if you specified a wrong branch that exists
on the remote end accidentally, it still was pushed. Do we want
to have a new "--i-really-want-to-push" option to make it safer?
I do not think so. Why should a new branch be treated any
differently?
Will drop 1/10 and 2/10 for now.