Initial run with no last-release tag, what is the base?

[aparij]

In Jenkins, when PR is merged to the main branch, and I'm running the versioning process for the first time, there is no last-release tag.
What should be the --base?
Normally it's `nx affected --base='last-release', should I have a special case for first run and have the hash commit before the last one (which is the PR merge to main) ?

Thanks

[aparij]

I just tagged main with last-release manually