Get the source
The source code of the SWTBot project can be found in the Subversion repository. It contains the usual SVN directory structure TRUNK, BRANCHES, and TAGS. The development version of the code (HEAD) can be found in TRUNK.
SVN repository: http://dev.eclipse.org/svnroot/technology/org.eclipse.swtbot/
The development repository can be browsed here: http://dev.eclipse.org/viewcvs/index.cgi/trunk/?root=Technology_SWTBot
You can check out from the SVN repository all the single plug-ins by hand, and add the necessary dependencies to your Eclipse installation.