我正试图在git存储库中重写我的历史记录，因为我需要删除一个包含受限信息的文件。
这就是发生的事情：
$ git filter-branch --index-filter 'git rm --cached --ignore-unmatch FILE' master
Cannot rewrite branch(es) with a dirty working directory.
所以我想"这很奇怪，我很确定我没有未提交的更改"，然后我运行：
$ git status -u
# On branch master
nothing to commit (use -u to show untracked files)
这是怎么回事？有人知道会发生什么吗？此存储库中存在子模块。
子模块暂存信息
我有18个子模块（所有Vim插件），下面是它们的状态。我觉得这可能是有用的信息。
$ for i in $(ls); do cd $i; git status -u; cd ..; done;
# Not currently on any branch.
nothing to commit (working directory clean)
# Not currently on any branch.
nothing to commit (working directory clean)
# Not currently on any branch.
nothing to commit (working directory clean)
# Not currently on any branch.
nothing to commit (working directory clean)
# Not currently on any branch.
nothing to commit (working directory clean)
# Not currently on any branch.
nothing to commit (working directory clean)
# Not currently on any branch.
nothing to commit (working directory clean)
# Not currently on any branch.
nothing to commit (working directory clean)
# Not currently on any branch.
nothing to commit (working directory clean)
# Not currently on any branch.
nothing to commit (working directory clean)
# Not currently on any branch.
nothing to commit (working directory clean)
# On branch master
nothing to commit (working directory clean)
# Not currently on any branch.
nothing to commit (working directory clean)
# Not currently on any branch.
nothing to commit (working directory clean)
# Not currently on any branch.
nothing to commit (working directory clean)
# Not currently on any branch.
nothing to commit (working directory clean)
# Not currently on any branch.
nothing to commit (working directory clean)
# Not currently on any branch.
nothing to commit (working directory clean)
其他信息
$ git diff-files --ignore-submodules --quiet
$ echo $?
1
$ git diff-index --cached --quiet HEAD --
$ echo $?
0
这主要是猜测，但错误可能是由git v1.7.1.1中修复的错误引起的（该错误是在您的原始帖子之后发布的）。来自提交消息：
Filter分支已经要求我们在开始之前有一个干净的工作树。然而，它在检查之前未能刷新索引，这意味着在stat脏的情况下它可能是错误的。