SVN change username

Question

I found a lot of examples on how to change the username for specific revisions and so on.

But what I need is this: I did a checkout with the authentication credentia

Answer 1

I believe you could create you own branch (using your own credential) from the same trunk as your workmate's branch, merge from your workmate's branch to your working copy and then merge from your branch. All future commit should be marked as coming from you.