我在Mac Sierra上使用Git 2.6.2。我想从我的git历史记录中删除几个大文件（我不想在Git中记录这些文件，因为它们太大了）。所以我试着跑步......
git filter-branch --prune-empty -d /tmp/dir1 \
--index-filter "git rm --cached -f --ignore-unmatch t1.backup" \
--tag-name-filter cat -- --all
导致
Cannot create a new backup.
A previous backup already exists in refs/original/
Force overwriting the backup with -f
然后当我运行我的git commit和push命令时，我得到了这个输出......
localhost:myproject davea$ git add .
localhost:myproject davea$ git commit -m 'My commit.'
On branch master
Your branch is ahead of 'origin/master' by 3 commits.
(use "git push" to publish your local commits)
nothing to commit, working directory clean
localhost:myproject davea$ git push origin master
Counting objects: 41, done.
Delta compression using up to 8 threads.
Compressing objects: 100% (41/41), done.
^Citing objects: 82% (34/41)
似乎仍然在存储库中处理大文件（基于最后一行花费这么长时间的事实）。所以我不认为我已经从我的git history / repository中清除了我的大文件。我该怎么做？