How to specify character encoding for 7z?

Doing 7z x on an archive gives me

Clearly some files were encoded differently and 7z by default does not convert to UTF-8. How to tell 7z to do the conversion?

The only options I found for charset:

• scc{UTF-8|WIN|DOS}: set charset for for console input/output

• scs{UTF-8|UTF-16LE|UTF-16BE|WIN|DOS|{id}}: set charset for list files

WIN, DOS, UTF-8 do not work. When trying to guess charset via

7z gives warning:

unzip does this right (cyrillic symbols got converted):

Supplementary information

• p7zip Version:

• hexdump of start of archive (od -tx1z -Ax):