e2e.container.push.branch1.default.slsa3: Remote branch null not found in upstream origin

[ianlewis]

https://github.com/slsa-framework/example-package/actions/runs/5239090125

gh: API rate limit exceeded for installation ID 17536452. (HTTP 403)
gh: API rate limit exceeded for installation ID 17536452. (HTTP 403)
Cloning into 'example-package'...
fatal: Remote branch null not found in upstream origin
failed to run git: exit status [12](https://github.com/slsa-framework/example-package/actions/runs/5239090125/jobs/9458600349#step:3:13)8

[ianlewis]

This is due to rate limiting.

#214