Some feedback on 'git clone create'

Hi, I hope this email finds you well.

I think Git bundles/packfiles are an exceptional compression format, but I find there are some rough edges with the tool to create them:

1. There is no way to specify that you want a shallow bundle, instead you are only able to a) pack the entire tree at a given head or b) pack new/updated objects in a specified range. Anecdotally, this could store data in ~67% of the size of an equivalent .zip file.

2. It seems that when specifiying a commit hash, it raises an error:
$ git bundle create repo.bundle $(git rev-list HEAD | head -n 1)

This confuses me slightly because I thought a commit hash should also be a valid head _pointer_. 'git rev-list' also seems to agree with me on this.

-- Sainan