How do the Tumbleweed Folks among us deal with this?

We generally don't add many third party repos and we set repository priorities. If I understand this correctly, you are currently using official openSUSE packages and your upgrade is prompting you to upgrade them by changing vendor to this home:wolfi repo. If you want to keep the original packages, you just need to set priorities: in YaST 's "Software Repositories" page for instance, you can select a repo and see what its priority is (99 is the lowest priority, 1 is the highest). You could for instance put the official repos at 95 priority and the wolfi repo at 99. This way, packages will remain set on the official repos even if there are new versions on the other repo.

However, if you have packages that you want to get from the wolfi repo but are also in the official repos, with this method you will be asked to change those packages to the official repos, the inverse situation compared to your issue. You can tell the system to keep those packages from your chosen repo, I do it by choosing a version on the YaST Software page.

People need to stop addint ramdom home repos and openSUSE finally needs to communicate that the proper way is to fork wanted packes into your own https://build.opensuse.org home repo.

Configuring the priority of the repository.
In OpenSuse, the priority of a repository is a value between 1 and 200, with 1 being the highest priority and 200 the lowest priority. If a package is available in more than one repository, then the repository with the highest priority takes precedence. Default is 99.

This is how I do via terminal:

List enabled repositories in priority order:
zypper lr -PE

In my case, the repo I want to change is:
4 | home_paul4us | home:paul4us | Yes | (r ) Yes | No | 99
(First column is the ID and last is PRIORITY)

Lower the 3rd party repo priority (set PRIORITY of the repository with ID 4 the value of 100):
sudo zypper mr -p 100 4

You will see the message:
Repository 'home_paul4us' priority has been set to 100.

Bonus
If you want to list what is installed from this repo (id 4):
zypper se -i -r 4

I set lower priorites (higher number) for all repos from OBS and such. The only repo that has a higher priority is Packman. You can see your priorities with "zypper lr -p", and set priorities with " zypper mr -p 100 ".

The suggestions made here are already spot on and I can just support the suggestion to use the least amount of extra repos as possible. Packman is the only one I'd consider, also check your repos regularly and see if you can make sense which is what, otherwise get rid of the ones where you have no clue why you had them in the first place (obviously check first which packages they install).

Use the --allow-vendor-change flag (I think that's it, I can't look it up at the moment) and it will happily switch between vendors without bugging you.

Or just remove the repo, but I guess you need it for other stuff.

I assume you have added the repo because it fixed some issues at some point. Is the repo still needed to fix those or could you remove the repo and just update using normal distro packages?

DISCLAIMER: I don't use OpenSUSE or any of the variants. I assume that the obs stuff is kind of like how the AUR is for Arch, or PPA's are for Ubuntu. If it's something difference, please disregard my comment.

I used Tumbleweed for about half a year 1-2 years ago. Version/dependency hell primarily between the main distro repos and Packman (the repo most multimedia drivers are installed from) was my main issue with it. You could expect either the main distros or Packman to break something between the two about once a month and prevent updates for a few days while the other side caught up. Got annoying, but those things can happen pretty easily on a rolling release.

I don't use any third party repos