I have created an SVN repository before. Now what I want to do is to prevent some specific files from update, since it is not needed for me to update them. I saw solutions for during the process of creating repo, but I did it long way back and I want to exclude some files now.

The situation is like the following:

```
repo/
updateme.txt
donotupdateme.txt

```

Here, I want donotupdateme.txt to stay the same while updateme.txt changes with the update operation.

p.s. I prefer doing this with Tortoise.