My .gitconfig

.gitconfig

[user]
	name = FirstName LastName
	email = you@yourdomain.com
[alias]
	A = add -A
  	a  = add
	aa = add --all
	ae = add --edit
	ai = add --interactive
	amend = commit --amend -C HEAD
	ap = add --patch
	au = add --update
	authors = "!git log --pretty=format:%aN | sort | uniq -c | sort -rn"
	b = branch
	c = commit
	ca = commit --amend
	cam = commit -am 
	changes = diff --name-status -r
	cm = commit --message
	co = checkout
	cpc = cherry-pick
	cu = !git branch --merged | egrep -v \"(^\\*|master|develop)\" | xargs git branch -d
	d = diff
	dc = diff --cached
	div = divergence
	ds = diff --staged
	fu = fetch upstream
	mud = merge upstream/develop
	h = help
	irb = rebase --interactive
	l = log --oneline --decorate
	lg = log --graph --pretty=format:'%Cred%h%Creset %an -%C(yellow)%d%Creset %s %Cgreen(%cr)%Creset' --abbrev-commit --date=relative
	ls-ignored = ls-files --exclude-standard --ignored --others
	m = merge
	mm = merge --no-ff
	msg = commit --allow-empty -m
	p = cherry-pick -s
	pick = cherry-pick
	pom = push origin master
	pofm = push origin HEAD:refs/for/master
	pofd = push origin HEAD:refs/for/develop
	pod = push origin develop
	prune-remotes = "!for remote in `git remote`; do git remote prune $remote; done"
	push = push --tags
	r = remote
	ra = !git log --graph --abbrev-commit --date=relative -20 --all --pretty='format:%C(yellow)%h%Creset -%C(red)%d%Creset %s %Cgreen(%ar) %C(bold blue)<%an>%Creset'
	rb = rebase
	rba = rebase --abort
	rbc = rebase --continue
	rbs = rebase --skip
	rh = reset --hard
	ru = remote update --prune
	s = status --short --branch
	sl = shortlog
	sm = submodule
	sma = submodule add
	smu = submodule update --init
	st = stash
	stl = stash list
	stp = stash pop
	tagcommit = !sh -c 'git rev-list $0 | head -n 1'
	tree = log --graph --pretty=oneline --decorate
	undo = reset --soft HEAD^
  	unwatch = update-index --assume-unchanged
  	up = pull --rebase --autostash
  	watch = update-index --no-assume-unchanged
	wd = diff --color-words
	wds = diff --color-words --staged
[color]
	branch = auto
	diff = auto
	status = auto
	interactive = auto
	ui = true
	pager = true
[color "branch"]
	current = yellow reverse
	local = yellow
	remote = green
[color "diff"]
	meta = yellow bold
	frag = magenta bold
	old = red bold
	new = green bold
[color "status"]
	added = yellow
	changed = green
	untracked = cyan
[help]
	autocorrect = 0
[apply]
	whitespace = nowarn
[merge]
	tool = diffmerge
[mergetool "diffmerge"]
	cmd = diffmerge --merge --result=\"$MERGED\"  \"$LOCAL\" \"$BASE\" \"$REMOTE\"
	trustexitcode = false
[mergetool]
	keepBackup = false
[push]
	default = current
[diff]
	tool = diffmerge
	renames = copies
	mnemonicprefix = true
[difftool]
	prompt = false	
[difftool "diffmerge"]
	cmd = diffmerge \"$LOCAL\" \"$REMOTE\"
[core]
	editor = /Users/donnfelker/bin/subl -w
excludesfile = /Users/donnfelker/.gitignore_global
autocrlf = input

[filter "media"]
	clean = git media clean %f
	smudge = git media smudge %f
	required = true
[filter "lfs"]
	clean = git-lfs clean %f
	smudge = git-lfs smudge %f
	required = true

I think you mentioned something about watch and unwatch.
You probably meant this:

[alias]
    watch = update-index --no-assume-unchanged
    unwatch = update-index --assume-unchanged
    unwatched = !git ls-files -v | grep "^[[:lower:]]"

So if you want to locally ignore settings.gradle in the root directory, you can do:

git unwatch settings.gradle

Oops, sorry, just noticed it as a separate gist.