Context

Currently, if you update code in a synchronous folder and then try to commit it, it will get overwritten by the synchro hook.  We can avoid this by checking to see if the async file is "clean", and then if the synchronous file would change contents.  We can allow passing an environment variable to override if it is a false positive.

Definition of done

Syncro hook and contribution guide are updated.

Pitfalls

None