[git-buildpackage] Upgrade a package to the same version in two branches

[Sebastian Andrzej Siewior]

Hi,

going from one upstream version to another I do
	gbp import-orig $orig_file
followed by a rebase. This works file for the `unstable' branch. Now if
I want to do the same `stable' branch (forward upstream package version
instead of adding patches on top of it) then gbp complains about
existing tags which were created as part of the import for unstable.

For git-dpm I had a workflow where I skipped the orig import for stable
and just forwarded the upstream branch manually and continued with
rebase and everything worked out.
What would be the proper way for gbp here (or does this sound like I do
something wrong)?

Sebastian