buildrep

Is there any way to make grab buildrep recursively through a directory.
I mirror freshrpms on my computer, and have it added to my config file.
I would like to run buildrep to speed up indexing the rpms, but
freshrpms puts each program in a seperate folder. I would like to be
able to do grab --buildrep /var/ftp/freshrpms// or grab --buildrep
/var/ftp/freshrpms/* but these commands do not work. Does grab support
this.

--Michael