To add datasets to a parent project:
git submodule add -b master https://github.com/privacytoolsproject/datasets.git /

To clone an existing repository that uses datasets, init submodule after clone:
git submodule init

To update datasets in an existing project:
git submodule update --remote

Alternatively, cd into the submodule and git pull

If git warns about "detached head" when inside submodule, then:

• from the submodule root:
  git checkout master
• from the parent project root:
  git config -f .gitmodules submodule.<submodule-path>.branch master

To commit changes to datasets from the parent project, then:

1. from the submodule, commit and push
2. from the parent project, commit and push

Note that the .gitmodule is configured to use https, which prompts for passwords every time.
To switch to ssh key authentication, then from the submodule root:
git remote set-url origin [email protected]:privacytoolsproject/datasets.git