Is there a variable to use for the folder created on TFS source checkout; to be used for ESB deploys?

We want to use Team City for Enterprise Service Bus deploys.  The normal process, is we grab the source files from TFS and run a script that builds and deploys the app.  The issue is that the script we use, has a static TFS workspace path.  From my understanding, TC creates a new folder with a random hash name, in the buildAgent/work directory.  As such I cannot use this script, that easily.  Is there a variable that TeamCity dynamically creates that can be of use for this?  The first few lines of the bat script is setting the TFS path:

SET "TFSPATH=C:\Releases\ESB"

But I can easily pass a variable to it:

SET "_WrkPath=%1"     Passed from TC
SET "TFSPATH=D:\Program Files\TeamCity\buildAgent\work\%_WrkPath%"

Is there such a variable or is there some other way I can achieve the same?