The fedora-cvs flag was approved for [https://bugzilla.redhat.com/show_bug.cgi?id=949474 nodejs-boom], and [https://admin.fedoraproject.org/pkgdb/acls/name/nodejs-boom it exists in pkgdb], but the git repo doesn't seem to exist:
{{{
% fedpkg clone nodejs-boom
Cloning into 'nodejs-boom'...
fatal: '/srv/git/rpms//nodejs-boom.git' does not appear to be a git repository
fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.
Could not execute clone: Command '['git', 'clone', 'ssh://patches@pkgs.fedoraproject.org/nodejs-boom']' returned non-zero exit status 128
}}}

[http://pkgs.fedoraproject.org/cgit/nodejs-boom.git It doesn't appear to exist in cgit either.]