Git sync all local tracking branches with remotes

.gitconfig

[alias]
	tracking = "!f() { git for-each-ref --format '%(refname:short):%(upstream:short)' 'refs/heads' | egrep -v ':$'; }; f"
	is-clean-workdir = "!f() { git diff --stat --exit-code || { echo \"Workdir dirty\"; exit 1; }; }; f"
	is-clean-index = "!f() { git diff --stat --cached --exit-code || { echo \"Index dirty\"; exit 2; }; }; f"
	is-clean = "!f() { git is-clean-workdir && git is-clean-index; }; f"
	co-merge = "!f() { local=\"$1\"; remote=\"$2\"; git checkout \"$local\"; git merge --ff-only \"$remote\"; }; f"
	current-branch = rev-parse --abbrev-ref HEAD
	sync = "!f() { git is-clean || { echo Aborting sync.; exit 1; }; current=$(git current-branch); git fetch --all; git tracking | while IFS=: read local remote; do echo \"Merging $local with $remote\"; git co-merge \"$local\" \"$remote\"; done 3>&1 1>&2 2>&3 | egrep -i --color 'fatal|$' 3>&1 1>&2 2>&3; git checkout \"$current\"; }; f"