I wanted to rebase to Silverblue (I’m currently running a different version of immutable Fedora), is this not the right command or link? 
blind@linux:~ rpm-ostree rebase fedora:fedora/43/x86_64/silverblue
error: While pulling fedora/43/x86_64/silverblue: Remote "fedora" not found
Could you please post the output of the following commands:
rpm-ostree status --verbose
ostree remote list --verbose --show-urls
sorry nvm the issue was resolved
it was a derivative that had policies that blocked other image sources for protection, so their community eventually replied to me and gave me a few commands that resolved the issue and I rebased successfully