git-buildpackage vs. dpkg-buildpackage

[basti <black.fledermaus@arcor.de>]

Hello,

I know that this can be a bit off-topic.
When I try to build a package based on git and use
 
git-buildpackage => docs are not include in deb-file.
dpkg-buildpackage => docs ARE include in deb-file.
 
dh_installdocs is included in rules at anytime.

Regards,
Basti