add the current ssh-agent to your session

ssh-agent.rb

# run on your wsl shell:
# eval `ruby file.rb`
def get_agent
  ps_aux_output = `ps aux | grep ssh-agent`
  agent_pid = ps_aux_output.split("\n")[0]
  agent_pid = agent_pid.match(/\d+/)[0].to_i - 1
  ssh_auth_sock = `find /tmp/ssh-*/ -type s -name agent.#{agent_pid}`
  print "export SSH_AUTH_SOCK=#{ssh_auth_sock}"
end

if ARGV[0] == 'help'
  puts "execute in your terminal: eval `ruby ssh-utils.rb`"
else
  get_agent
end