debian/changelog

 ruby-narray-miss (1.4.0-3) UNRELEASED; urgency=medium
 
   * Bump Standards-Version to 4.3.0, no changes.
+  * Add gbp.conf to use pristine-tar & --source-only-changes by default.
 
  -- Bas Couwenberg <sebastic@debian.org>  Sun, 05 Aug 2018 20:31:58 +0200
 

debian/gbp.conf

+[DEFAULT]
+
+# The default name for the upstream branch is "upstream".
+# Change it if the name is different (for instance, "master").
+upstream-branch = upstream
+
+# The default name for the Debian branch is "master".
+# Change it if the name is different (for instance, "debian/unstable").
+debian-branch = master
+
+# git-import-orig uses the following names for the upstream tags.
+# Change the value if you are not using git-import-orig
+upstream-tag = upstream/%(version)s
+
+# Always use pristine-tar.
+pristine-tar = True
+
+[buildpackage]
+pbuilder-options = --source-only-changes