Clean repo checkout on linux

[am11]

Repro

On linux:

#  clone repo
$ git clone https://github.com/microsoft/TypeScript-TmLanguage && cd TypeScript-TmLanguage

# delete all .txt files
$ git rm :/*.txt

# revert deletion
$ git reset && git checkout .

# check the repo status
$ git status

Expected

repo status reports no modified files.

Actual

repo status reports that there is one modified file:

$ git stauts

On branch master
Your branch is up to date with 'origin/master'.

Changes not staged for commit:
  (use "git add <file>..." to update what will be committed)
  (use "git restore <file>..." to discard changes in working directory)
        modified:   ThirdPartyNotices.txt

no changes added to commit (use "git add" and/or "git commit -a")