git-lfs is provided as an eups package on the shared stack, but if one follows the instructions at https://developer.lsst.io/tools/git_lfs.html after typing setup git_lfs everything will appear to be correct, but it won't work.
The solution is to either type git lfs install despite the fact it's already installed, or add
to their ~/.gitconfig file (which the instructions already have people editing).
Someone should update the docs so other don't fall into this trap. It's a trivial fix, but I don't know how to edit the docs.