git - how to get default branch?

Question

My team alternates between usage of dev and master as default branch for several repos and I would like to write a script that checks for the default branch when entering a

Answer 1

git rev-parse --abbrev-ref origin/HEAD will print origin/. The git symbolic-ref answers are doing the same thing but need a longer argument.

If the origin repository changes its default branch name, then git remote set-head origin -a will retrieve the new default branch name.