message: Limit the depth of the clones
  Trying to diagnose error in cloning, but also reduce download speed as
  we do not need the history for CI builds.
diff: @@ -6,7 +6,7 @@ git remote add origin git://github.com/OpenChemistry/openchemistry.git
  git pull origin master
  -git -c submodule.avogadrolibs.update=none submodule update --init
  +git -c submodule.avogadrolibs.update=none submodule update --init --depth 1
  cd ../
  