all_release_branch_names=($(git show-ref | grep 'release_' | cut -d' ' -f 2))
   for branch in $all_release_branch_names; do
     commit_where_it_branched_from_master= $(git merge-base ${branch} master)
     git show $commit_where_it_branched_from_master -s --pretty=format:"$commit_it_where_branched_from_master branched from master on %cd"
   done