Today, @Shelikhoo merged a change to stop sending Hello Verify Request. This may overcome Snowflake blocking by DTLS fingerprint in some ISPs in Russia.
It is not present in any release yet, but you can test it manually. You need commit 10fd00068528fd6309bbb49f9dd0fea38f1ac5ef or later. The expected output is Bootstrapped 100% (done).
$ git clone https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake.git
$ cd snowflake/client
$ go build
$ tor -f torrc
There may still be a problem with the standalone (non-browser) proxies, as the Hello Verify Request mitigation hasn’t been applied to them yet.