Download tar / zip with oauth api token

I have a project that requires allowing members of an organisation to download the contents of a private repository via a script, I was hoping I would be able to use bitbucket and access the download links with oauth credentials, but this does not appear to be possible currently.

I would like to use my oauth credentials to access the following uri's on private repositories.

https://bitbucket.org/

{user}

/

{repo}

/get/

{branch,tag}

.

{zip,tar.gz,tar.bz}

github currently supports this feature and their API docs for it can be found here, but as a mercurial user thats not really an option for me:

http://developer.github.com/v3/repos/contents/

they appear to have an endpoint that generates short lived token with access to the download.