Copy files to another repository while saving git history

import.sh

# copied from http://gbayer.com/development/moving-files-from-one-git-repository-to-another-preserving-history/
git clone <git repository A url> # clone source repository
cd <git repository A directory>
git remote rm origin # to make sure it doesn't affect the original repository
git filter-branch --subdirectory-filter <directory 1> -- --all # remove all files other than the ones needed
mkdir <directory 1> # move them into another directory where they will be stored in the destination repository (if needed)
mv * <directory 1>
git add .
git commit

git clone <git repository B url> # clone destination repository
cd <git repository B directory>
git remote add repo-A-branch <git repository A directory> # add source as a remote
git pull repo-A-branch master # pull
git remote rm repo-A-branch