git checkout "v${version}"
git submodule update --init
(cd roms/seabios && git describe --tags --long --dirty > .version)
-rm -rf .git roms/*/.git dtc/.git pixman/.git
+(cd roms/skiboot && ./make_version.sh > .version)
popd
-tar cfj ${destination}.tar.bz2 ${destination}
+tar --exclude=.git -cjf ${destination}.tar.bz2 ${destination}
rm -rf ${destination}