Bug#820494: origtargz: leaves "upstream" files in "master" after invocation

[Christoph Berg]

Re: Dmitry Smirnov 2016-04-09 <2265949.YxrWVc7PcZ at deblab>
> From "origtargz" functionality of course. One can checkout package repository 
> with upstream and pristine-tar branches and generate orig tarball using 
> "origtargz" even if package is not uploaded yet in which case tarball is 
> generated straight from repository.

Btw, origtargz does not generate any tarballs, it just tries to copy
them from various locations (including pristine-tar).

Christoph