user87711: Trying to update my bitcoin core installation on raspberry pi with git checkout and it's giving the error "error: pathspec 'v0.16.3' did not match any file(s) known to git." Any recommendations?

user48884: That error likely means that you have not done a git pull or git fetch. Those are required so that you can pull down the latest source code and tags so you can then do git checkout.

87711: <p>Trying to update my bitcoin core installation on raspberry pi with git checkout and it's giving the error "error: pathspec 'v0.16.3' did not match any file(s) known to git." Any recommendations?</p>
 48884: <p>That error likely means that you have not done a <code>git pull</code> or <code>git fetch</code>. Those are required so that you can pull down the latest source code and tags so you can then do <code>git checkout</code>.</p>
