With the arrival of Flock, we would like to specify which Flutter repository to clone.

Currently, https://github.com/flutter/flutter.git is used but we would like to have the option to specify the URL, which in this case would be https://github.com/Flutter-Foundation/flutter.git

We can see that setup.sh has the following line that may be of relevance:

git clone -b "$CHANNEL" https://github.com/flutter/flutter.git "$CACHE_PATH"

Is this at all possible? Thanks.