gitconfig aliases for branch management

gitconfig

[alias]
    branchname = !git rev-parse --abbrev-ref HEAD
    bn = !git branchname
    branchdate = !git for-each-ref --sort='-authordate' --format='%(refname)@%(authordate)' refs/heads | sed -e 's-refs/heads/--' | column -s @ -t | cat --number 
    bd = !git branchdate
    bdget = "!sh -c 'git branchdate | tac | tail -n \"$1\" | head -n 1 | awk -F\" \" \"{print \\$2}\"' \"$1\""
    cobd = "!git checkout $(git bdget \"$1\") #"