Git notes! How do you set the HEAD without checking out a branch?
git symbolic-ref HEAD refs/heads/remotes/origin/master
Then you can do git lfs fetch (which is faster) followed by git
checkout master.
And don’t forget, git clone --no-checkout is also useful too.
Update master without checkout?
git fetch origin master:master
20160708/http://stackoverflow.com/questions/3216360/merge-update-and-pull-git-branches-without-using-checkouts