.gitconfig

[alias]
  st = status
  ci = commit
  br = branch
  co = checkout
  df = diff
  lg = log -p
  branches = for-each-ref --sort='-authordate:iso8601' --format=' %(authordate:relative)%09%(refname:short)' refs/heads 
  
[push]
	default = matching
[core]
	excludesfile = ~/.gitignore

Lawdy! So much nicer than my awful aging alias:

  aging = "!git branch -a | grep -v HEAD | sed s/^..// | while read branch; do echo `git log -1 --pretty=format:'%Creset%ai %C(red)%h %C(yellow)%ar %C(blue)[%cn] %C(green)' $branch` $branch ; done | sort"

Thank you for sharing!