Tautomerism in 3,5‐dimethyl‐4H‐pyrazole How would tautomerism take place in 3,5‐dimethyl‐4H‐pyrazole?

I am aware of nitro–aci nitro and keto–enol, but I haven't seen such a compound before. I recognize that a hydrazone formation was done but nothing more. From what I was able to reason, an alkadiene is formed but that is unstable, so tautomerism shouldn't be possible. How does this compound show tautomerism?
You are lucky, because not only the pyrazole motif, but the complete structure drawn by you is part of the Tautobase database

with a preference for the second structure drawn.
By the way, the values of this database are accessible to the public on GitHub, and since January 2020 implemented as (equally [sub]structure) searchable data file within DataWarrior.  Thus, you may train your chemical eye on 1680 tautomers.
Tautobase: An Open Tautomer Database, Wahl, O.; Sanders, T. J. Chem. Inf. Model. 2020, 60,1085-1089; doi 10.1021/acs.jcim.0c00035