Repacked sources: Upstream sources contain a debian-directory, which is regularly updated from this package. In order to have a cleaner separation between upstream and debian package, upstreams released tarballs are repacked. the debian repack is marked by appending +dfsg to the version string. Patch system: This package uses dpatch to manage patches on top of the released tarballs, please check /usr/share/doc/dpatch/README.source.gz for details. The debian/patches directory within the upstream git repository is usually empty, as I commit most patches directly to upstream repositories head. and put backports to the released version into the debian/patches directory.