to be able to help you you would need to tell us what source are you looking for?
usualy you can go to project page of the project you are interested in and there you can find link to sources, wherever they are.
fisheye is just friendly view of repositories, noting else.
In my example it is about
Fix is done in the changelog (see link) but nowher in the git repo (?)
here it is in git:
but this file is just specification of what is included in org.jboss.ws.jaxws-client module noting else.
definition of module you can find in https://github.com/jbossas/jboss-as/blob/master/build/build.xml
(look for org.jboss.ws.jaxws-client)
that tells you it is using maven dependancy with group="org.jboss.ws.cxf" artifact="jbossws-cxf-client"
which is defined in https://github.com/jbossas/jboss-as/blob/master/pom.xml
for which code can be found at http://anonsvn.jboss.org/repos/jbossws/stack/cxf/trunk/
specificly client module http://anonsvn.jboss.org/repos/jbossws/stack/cxf/trunk/modules/client/