Move Directory Between Git Repos with History

git_move_dir.txt

git clone source_repo && cd source_repo
git remote rm origin
git filter-branch -f --tree-filter \
  "find -maxdepth 1 -not -name . -not -name .git -not -name folder_to_move -print0 | xargs -0 rm -rf" \
  --tag-name-filter cat --prune-empty -- --all
cd ..
git clone target_repo && cd target_repo
git remote add source_repo ../source_repo
git pull source_repo master --allow-unrelated-histories
git push

Replace source_repo, folder_to_move, and target_repo.