apt-get source cockpit
cd cockpit-*
-# buster
-series_ver buster-backports
-debian/adjust-for-release buster
-dch --local ~bpo10+ --distribution buster-backports --force-distribution "No-change backport to Debian Buster"
+# bullseye
+series_ver bullseye-backports
+debian/adjust-for-release bullseye
+dch --local ~bpo10+ --distribution bullseye-backports --force-distribution "No-change backport to Debian Bullseye"
debuild -S -sd -nc -v$ver
upload