It's more a problem of knowing at what commit the ckpool programs are tested and working ...
As far as I know that is some time last year ...
The last tag is v0.9.4 2016-08-23 (for standard ckpool I run ded126d5 which is the same thing since there's no ckpool changes in between them and there's a deadlock some point after that and the workinfo changes after that can break ckdb shift processing and payouts)

The problem is that there's a collection of ckpool programs in there and they aren't all tested properly or at all (and at what version/commit):
Mining pool, standard proxy, passthru proxy, proxy node, remote node, redirector, bitmain's hidden ckpool api to manage ckpool programs directly.