SHELL

show all remote branches git

git branch -r

get all remote branches

git fetch --all

get all branches from remote

You can fetch all branches from all remotes like this:
git fetch --all

show all remote branches git

git remote show <remote-name>

bash script to get all git branches from remote

git for-each-ref --shell 
  --format='git log --oneline %(refname) ^origin/master' 
  refs/heads/

show all remote branches git

git ls-remote --heads <remote-name>