Can I Connect to a Local SMB Share?
According this this link it is possible:

https://www.chrisnewland.com/solved-mac-osx-samba-cifs-through-ssh-tunnel-error-the-server-localhost-is-available-on-your-computer-364


  Finder identifies smb://127.0.0.1 as a local filesystem and refuses
  to mount port 445 even if you've set up an SSH tunnel using 

-L 445:localhost:445 

  
  The solution is to alias your lo0 interface to
     127.0.0.2 and Finder doesn't see this as a local address. 

sudo ifconfig lo0 127.0.0.2 alias up 

  
  Create the ssh tunnel and map to your    Samba / CIFS server 

ssh user@remote -L 127.0.0.2:445:smbhost:445 

  
  Now you can open the share in Finder 

smb://user@127.0.0.2