svn: Base checksum mismatch on

试了覆盖更新再更改提交都不行，下面方法可行

@参考地址

1. Make copy of problematic file.
2. Revert.
3. Unversion and add to ignore item.
4. Commit.
5. Owerwrite ignored file from copy.
6. Add file back to SVN.
7. Commit.