Subversion - Do full update on subdirectory after immediates-only checkout

Good day, I am attempting to carry out a sparse checkout of parts of a repo. Basically, let's assume I want to just check out the directory structure for the first level of a repo. I could do: ``` svn co --depth=immediates ``` Now, I would like to go into one of the sub-directories in my local working copy, and update it completely (ie: depth=infinity). ``` svn up --depth=infinity ``` However, this does not download/checkout any files at all. I know that I could just manually do ``` svn co URL-to-path --depth=infinity ``` But this would mean that for each subdirectory, I have to type in the full path to the SVN repo, which will become a pain really fast based on how many directories I have to do this for. Is there a way to force `svn up` to just ignore the `depth` argument previously used by the `checkout` command? Thank you.