Dear Maintainer,

The option --all is available for some commands (clone, pull) but not for push.
To me it seems that 'gbp push' is not equivalent to 'git push --all', mainly
when
a clone does not show the pristine-tar branch at first and some updates are
done on this branch.

I faced something like:

$ gbp clone git@salsa.debian.org:Peutch-guest/tworld.git
$ git branch
* master
  upstream
$ git pristine-tar commit ../tworld_2.3.0.orig.tar.gz
$ gbp push

and the pristine-tar commit was not pushed until a 'git push --all'.

Regards,
Patrice