Say I'm cloning a repository that I always clone to `C:\working_copies\<customer-name>\<customer-project>\` and that the project has variables in it's `build.properties` that get filled in with `<customer-name> <customer-project>` (by me) everytime I clone the repo. 

Is there a way that I can fill in these values in the file automatically by placing some special value in the file (in ant it's something like `${base-dir}` or something like that) that would fill in these build.property values for me?
['https://Stackoverflow.com/questions/2289288', 'https://Stackoverflow.com', 'https://Stackoverflow.com/users/18149/']
From (hazy) memory, that was the tag used by SCCS back in the "good old days". Given that (to my knowledge), BitKeeper uses SCCS underneath, it could be BitKeeper.
It is usually something that is added automatically by the version control system.