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How to bypass SSH destination host key fingerprint check?

When you first connect to a host, `ssh` asks you about saving its fingerprint. If you do, on subsequent connections it will check the fingerprint and refuse to connect if it changed.

I get that this is a security measure in case someone tries to impersonate my server.

However, it is also very annoying when using a VPS. I give my public key to the VPS provider, so that it gets spun up with the key "baked in", and I can do a one click reset. But when I do reset, because the new machine is technically a different machine, `ssh` predictably pouts and complains. However, *obviously* it's fine for the fingerprint to not match, because I just re-provisioned the server myself a minute ago! But, `ssh` doesn't know that.

Right now I have to open `~/.ssh/known_hosts`, find the line for me host among the many in there, delete it, try again, press yes again... Not the end of the world but a bit tedious.

Isn't there some CLI switch or something that tells SSH to stop whining about fingerprints just this time, and just automatically update `known_hosts` for me?