Shallow clone cannot fetch new commits/branches?

Question

I have this:

git clone --depth=1  app
cd app
git fetch origin
git checkout a119b1076dd45a88a3609c4f7893ef3d82f9a4ee

but it says:

Answer 1

When you're doing a shallow clone you may want to specify a branch you are going to fetch:

git clone --depth=1 --branch=me/work  app