Solving Fossil's ASCII art CAPTCHA in 171 characters

I recently stumbled upon what might be the most charmingly naive CAPTCHA implementation I've ever seen: Fossil SCM's text-based CAPTCHA. It renders hex digits as ASCII art using unicode block characters, and asks users to type what they see. You can find a live example here.

Here's what 69B34B04 looks like:

  ██████      ██████    ████████      ██████          ██    ████████      ██████          ██    
██      ██  ██      ██  ██      ██  ██      ██      ████    ██      ██  ██    ████      ████    
██          ██      ██  ██      ██          ██    ██  ██    ██      ██  ██  ██  ██    ██  ██    
████████      ████████  ████████        ████    ██    ██    ████████    ████    ██  ██    ██    
██      ██          ██  ██      ██          ██  ██████████  ██      ██  ██      ██  ██████████  
██      ██  ██      ██  ██      ██  ██      ██        ██    ██      ██  ██      ██        ██    
  ██████      ██████    ████████      ██████          ██    ████████      ██████          ██    

My immediate thought was to try and write a solver for it for fun, but while doing so I wondered how small the solver could possibly go. Having never done any sort of code golfing before, this seemed like a good excuse to try.