Upgrade old (pinned) version after rebase

I have a pinned version of Silverblue 36 and did a rebase to 37 for testing/extension development. I still want to use 36 as my daily, but after the rebase rpm-ostree upgrade will always try to upgrade 37. Is there a way to specify which tree to upgrade? Or do I just need to use Boxes for 37 testing? I tried every possible entry in the OSNAME option but I couldn’t find one that worked.

Thanks!

Hello @archmunky ,
You should be able to pick your F36 commit to boot, as well you can set it as default with ostree. Something like sudo ostree admin deploy <commit ref>