According to documents found in the Kyiv region in late May, the Russian military instructed on how to communicate with the local population.

Read here Hospitals for occupiers from Mariupol diagnosed with cholera are prepared in Rostov-on-Don

In addition to psychological and propaganda stamps about "puppet power in Kyiv", Russian soldiers were ordered to present themselves not as Russians but as Orthodox. It is as if the mention of the Russians could lead to a confrontation with civilians.
Documents proving that the Russian military was tasked with capturing Ukraine are available here.