Git: How to pull a single file from a server repository in Git?

Question

I am working on a site with a server running Git. I am using Git for deployment (not GitHub). This was set up prior to my involvement using a hook method, and I referred to this

Answer 1

git fetch --all
git checkout origin/master -- 
git add 
git commit -m " updated"

This is assuming you are pulling the file from origin/master.