Git Alias for Listing Local or Remote Branches by Last Modified Date

.gitconfig

[alias]
	branch-latest = "! git-branch-latest() { if [[ $1 == \"-r\" ]]; then for branch in `git branch -r | grep -v HEAD`;do echo `git show -s --oneline --format=\"%Cblue%ci%Creset\" $branch | head -n 1` \"\t$branch\"; done | sort -r; else git for-each-ref --sort=-committerdate --format=\"%(color:blue)%(committerdate:iso)%(color:reset)%09%(refname:short)\" refs/heads/; fi }; git-branch-latest"

Remote listing was adapted from https://gist.github.com/l15n/3103708#gistcomment-1581590.