Debian source tarball differs from upstream...

Upstream is on github:
 https://github.com/kit-cel/gr-radar.git

Since there is not git tag, I used b80201d to create a 0.0.0.20161018 version:
 git archive --format=tar --prefix=gr-radar-0.0.0.20161018/ b80201d | xz > ../../gr-radar_0.0.0.20161018.orig.tar.xz

Except the git clone tree is not ready for redistribution...
 git archive --format=tar --prefix=gr-radar-0.0.0.20161018/ b80201d | (cd .. && tar xvf - )
 cd ..

Lots of files in the source tree say "You should have received a copy of the GNU General Public License",
so let's not make them wrong and add a copy to the source tree to ensure license compliance when
redistributing the source tarball:
 cp -p /usr/share/common-licenses/GPL-3 gr-radar-0.0.0.20161018/COPYING

Place the original source as modified into a Debian source tarball:
 tar Jcvf gr-radar_0.0.0.20161018.orig.tar.xz gr-radar-0.0.0.20161018

