Control: tags -1 patch It's the documentation timestamp added by ikiwiki: while this is the file timestamp not the build time, some of these files are modified by debian/patches.
This should fix it, but has not yet been tested: --- a/debian/rules +++ b/debian/rules @@ -27,7 +27,7 @@ override_dh_auto_configure: #Include the test suite and the documentation override_dh_auto_build: dh_auto_build - ikiwiki --verbose --no-usedirs --underlaydir docs --plugin map --rebuild docs docs_build + ikiwiki --verbose --no-usedirs --underlaydir docs --plugin map --rebuild --timeformat "`dpkg-parsechangelog -SDate`" docs docs_build rm -rf docs_build/ikiwiki override_dh_gencontrol: