After doing a sparse checkout with the immediate children option, can I retrieve a subfolder's contents in TortoiseSVN?

My repository looks like this:

trunk
 doc
 src
 etc...

I want to grab the entire contents of src and get the other directories as needed in the future.

If I do a sparse checkout of trunk with "Just this item", I can get all of src by going into the Repo-Browser per the TortoiseSVN documentation (under the section "Checkout Depth".

Is there a way to get the entire contents of src at a later time if my sparse checkout is "Immediate children, including folders"?

It just seems a little awkward to me that if you use "immediate children" that you can never lazy load the entire contents of a folder, so I figured there was a way to do it.