Error migrating branches with multiple '/' characters

[JohnPeacockMessageSystems]

We unwisely created some branches with nested branch names which do not migrate cleanly to Git, because git stores branches as filesystem paths:

error: cannot lock ref 'refs/tags/archive/feature/MO-488': 'refs/tags/archive/feature/MO-488/MO-489' exists; cannot create 'refs/tags/archive/feature/MO-488'

I am already passing the --fix-wrong-branch-names option, so it's unclear what I can do to move forward. And in fact, the branches in question are all closed, so because I did not pass the --no-clean-closed-branches option should mean these branches are not migrated at all.

Is there a possibility of providing a --branch-map option to enable us to provide alternate mapping for the affected branches? Or some other way to ignore or prune these closed branches before it hits this error state?

[kilork]

It looks like a bug in the --fix-wrong-branch-names option.

You actually can w/a this, you need to use config.toml and specify mapping in [branches] section.

Simple example you can find here:

https://github.com/kilork/hg-git-fast-import/blob/HEAD/examples/single.toml