git clone --depth=2 https://github.com/electronicvisions/releases-ebrains .
git submodule update --init --depth=2
git clone --no-checkout --depth=2 https://github.com/electronicvisions/releases-ebrains .
# now select one top-level: pynn-brainscales, hxtorch, jaxsnn, oppulance
git sparse-checkout set "pynn-brainscales"
git checkout
git submodule update --init --depth=2 -- pynn-brainscales