Configure git-buildpackage

debian/README.source

+git branch names
+----------------
+
+Packaging is done in the upstream repository.
+We deviate from DEP-14_ in the following way:
+- debian packaging is done in debian/latest (following 2020-11-29 update)
+- upstream branch is master
+
+`gbp` is configured to consider these conventions.
+
+
+.. _DEP-14: https://dep-team.pages.debian.net/deps/dep14/
+
+
+version tags
+------------
+
+procset follows `semantic versioning`_, and (upstream) versions are tagged with the `v` prefix.
+Debian releases are tagged with the prefix `debian/`.
+
+`gbp` is configured to consider these conventions.
+
+.. _`semantic versioning`: https://semver.org/

debian/gbp.conf

+[DEFAULT]
+upstream-branch = master
+upstream-tag = v%(version)s
+debian-branch = debian/latest
+
+[buildpackage]
+pristine-tar = True
+pristine-tar-commit = True