Analyse your remote branches in origin (run in a git repo, with remote of origin)

gistfile1.txt

function analyse_remote_branches {
  printf "\n\n== Loading remote branches..\n" 
  git gc --prune=now  
  git remote prune origin   
  git for-each-ref --shell --format="%(refname)" refs/remotes/origin | \
  while read branch
  do
    branch_name=${branch/refs\/remotes\/origin\//} 
    printf "\nRemote Branch : ${branch_name}\n"                         
    result=`git log master..origin/${branch_name//\'/} --pretty=format:" -------> %h | %ar | %an | %s" --abbrev-commit --date-order --decorate -n 4`
    if [ "$result" == "" ]; then
      echo " <--> Commits all  merged in master"    
    else
      echo " --> Commits not in master : " 
      printf "$result\n"
    fi
    echo "---"
       
  done
  
}