What This Topic Actually Is
I've spent a lot of time on the internet reading about fringe physics and Soviet-era alternative theories, and I've never encountered anything called "Kozyrev Mirror Wikipedia." The phrase doesn't correspond to any Wikipedia article, mirror site, or recognized resource that I can find. What I can tell you about is Nikolai Kozyrev, a Soviet astrophysicist whose unconventional ideas about time and causality have spawned a small amount of interest in alternative science circles. If you search for this exact phrase, you'll likely find nothing of substance. Some of the search results that do come up may reference Kozyrev's broader theories—like his concept of "dynamic time" or the "Kozyrev effect"—but there is no dedicated mirror or Wikipedia project by that name. The phrase appears to be something people throw together at random rather than an actual thing that exists. I tried to track down what someone might actually be looking for when they type this query. The closest real resources are general Wikipedia coverage of Kozyrev himself, some academic papers on his torsion field hypotheses, and various forums where people discuss his work outside mainstream physics. None of these are mirrors. None of them are called what you asked about.
Here's a practical note from dealing with obscurer topics like this: if you're looking for archived or mirror versions of Wikipedia articles on Kozyrev due to concerns about source stability, the Wayback Machine at web.archive.org works fine for pulling old snapshots of any standard Wikipedia page. I've used it myself to grab versions of articles before edits changed the record. It's boring infrastructure, not a special tool, but it does the job. If you can clarify what you're actually trying to find—maybe a mirror of a specific Kozyrev-related Wikipedia article, or information about Kozyrev's theory of causal mechanics itself—I can help with that instead. As it stands, the query points to nothing that exists.