Unable to push a new branch to an empty repository 🪵

[JamieSlome]

Describe the bug

When attempting to push to an empty repository on GitHub, the push of a new branch with an initial commit fails.

To Reproduce

1. Create a fresh repository with nothing in it - no branches
2. Add the repository to GitProxy
3. Clone the repository through GitProxy
4. Make a novel change, commit and push the branch

Expected behavior

The branch and commit created on the local git client should be pushable via GitProxy to the upstream.