private DocRef getDocRef(final String uuid) {
        return DocRef.builder()
                .uuid(uuid)
                .type(GitRepoDoc.TYPE)
                .build();
    }
Called on the server when a REST request is received from the
UI for a Git Pull.
@param gitRepoDoc The doc holding git repo info.
@return a GitRepoRespose with all the messages about
whether it worked.
stroom-gitrepo/stroom-gitrepo-impl/src/main/java/stroom/gitrepo/impl/GitRepoResourceImpl.java