.gitconfig

[alias]
  l = "!source ~/.githelpers && sexy_git_log"
# if alias already exists just add the l line, otherwise add whole section

.githelpers

#!/bin/bash
# save @ ~/.githelpers
HASH="%C(yellow)%h%C(reset)"
RELATIVE_TIME="%C(green)%ar%C(reset)"
AUTHOR="%C(white)%an%C(reset)"
REFS="%C(red)%d%C(reset)"
SUBJECT="%s"

FORMAT="$HASH^$RELATIVE_TIME^$AUTHOR^$REFS $SUBJECT"
function sexy_git_log() {
    git log --graph --pretty="tformat:$FORMAT" $* |
    column -t -s '^' |
    less -FXRS
}