$ mkdir delme-git-test
$ cd delme-git-test
$ git init
Initialized empty Git repository in /Users/gregg/temp/delme-git-test/.git/
$ mkdir foo
$ touch foo/bar.txt
$ git add foo
$ git commit -m "initial commit"
[master (root-commit) 39efbc8] initial commit
 1 file changed, 0 insertions(+), 0 deletions(-)
 create mode 100644 foo/bar.txt
$ git rm -r foo
rm 'foo/bar.txt'
$ git checkout -- foo/*
zsh: no matches found: foo/*