The discussion about per-component repositories [1] doesn't seem to match reality. If one wanted to check out just one component-area workspace it's not clear how to proceed from the guidebook description. It says the URL pattern is: <release>/<project>{-gate}?/<component> <release> obviously is 'jdk7' ... but then precisely what value is used for '<project>' and '<component>' The page lists project names such as '2d' so perhaps one of these would work hg clone http://hg.openjdk.java.net/jdk7/2d hg clone http://hg.openjdk.java.net/jdk7/jdk7/2d But those result in a directory containing just the license & README & make files, and no source. On the other hand this following results in just the CORBA repository being checked out hg clone http://hg.openjdk.java.net/jdk7/jdk7/corba - David Herron [1] http://openjdk.java.net/guide/repositories.html#term