Hm, in what way do you find that DVC requires creating new branches for experiment tracking?

I find the following workflow works well, for example:

1. Define steps depending on a `config.yml`.

2. Run an initial experiment (with an initial config) and commit the results.

3. Update config (preserving the alternate config and using symlinks from `config.yml` to various new configs if necessary), re-run, and commit.

4. Results are then all preserved in your git history.