@User's zerotoasic course recomment the following in the intro material:

skywater_pdk = "c094b6e83a4f9298e47f696ec5a7fd53535ec5eb"
    open_pdks = "14db32aa8ba330e88632ff3ad2ff52f4f4dae1ad"
    openlane = "mpw-3a"
    caravel = "5712871d27c08900d18edc72a7f534cc8be1b2dd"
    caravel_user_project = "mpw-3"

but it would be great to get it updated for mpw-5