Such hats (and often completely uniform, stylized under the historical Cossack Ukrainian clothing) used the parts of "Haydamaks".
The historical meaning of the word:
https://en.wikipedia.org/wiki/HaydamakDuring the civil war in Russia, the volunteer units of Ukrainian nationalists were often wore such a name (and uniform).
For the first time, Schlyk during this period appeared on the headdresses of the so -called "serozhupanniki (Gray uniforms)" - the First Rifle Cossack division, formed by Austria-Hungary from Russian prisoners of war in 1918.
https://uk.wikipedia.org/wiki/?????????????
Around the same time, the Germans formed two divisions of the "Sinezhupanniki (blue uniforms)" from the Russian prisoners. Their blue uniform was also stylized under historical Cossack clothes, but the slide was pinned to the fur cap of cockades. These troops, alas, in reality did not take part in hostilities and were quite quickly disbanded.
https://uk.wikipedia.org/wiki/??????????????
Famous Ukrainian regular military units that had such a uniform during the war:
Black Zaporozhets - A small elite formation of about 300 horsemen and 200-300 infantrymen and artillery battery:
https://uk.wikipedia.org/wiki/?????_?????????
Gaidamatsky Kosh Sloboda Ukraine (3rd Gaidamatsky Infantry Regiment)
https://ru.wikipedia.org/wiki/3-?_???????????_????????_????
Soldiers "Black Gaidamaki Kuren" and "Red Gaidamaki Kuren" from this formation.
In fact, there were quite a few similar formations, their uniform was distinguished by a variety of options (everything depended on the imagination of the commanders), but they were rarely numerous. In the game you can create small, but well -motivated, elite parts of volunteers.
The Russian soldier’s papa of the imperial army was different in design from traditional papai and I do not know examples that “Ukrainian” papachi with slaps were made on its basis. I think there was no particular need for this, and such hats were made without the need to redo something.