I have a problem when I try to checkout to a branch. Im getting the error:

```
Please, commit your changes or stash them before you can switch branches.
error: The following untracked working tree files would be overwritten by checkout:
        build/classes/bp/conf/db/user.sql
        build/classes/bp/conf/db/user_group.sql
        build/classes/bp/conf/db/user_info.sql
        build/classes/views.properties

```

I cannot stash or commit them because those files are included in the `.gitignore`.

Please help.