get origin of an installed packages

originInstalledPackages

LC_ALL=C dpkg-query --showformat='${Package}:${Status}\n' -W '*' \
  | fgrep ':install ok installed' \
  | cut -d: -f1 \
  | (while read pkg; do 
       inst_version=$(apt-cache policy $pkg \
                                | fgrep Installed: \
                                | awk '{ print $2 }'); 
       origin=$(apt-cache policy "$pkg" \
                          | fgrep " *** ${inst_version}" -C1 \
                          | tail -n 1 \
                          | cut -c12-); 
       echo $pkg $origin; 
     done)