Set this to mark this as building a tag. When a build comes from a tag, the deb version does not get incremented(i.e. it is exactly as set in the debian/changelog file). If using SVN, this plugin automatically looks at the SVN_URL_1 environment variable to see if the string "tags/" exists. If it does, the build will act as though this parameter is set. If using Git, this plugin automatically looks at the GIT_BRANCH environment variable to see if the string "tags/" exists. If it does, the build will act as though this parameter is set. Alternatively, you can also set the environment variable DEB_PBUILDER_BUILDING_TAG to either true or false.