When a branch has the same name as a tag, it errors when pushing to origin. Steps to reproduce:

1. Add a Git repository.
2. Push to a remote.
3. Create a branch (eg. stsp-420).
4. Create a tag on master with the same name (eg. stsp-420).
5. Push the created tag to the remote.
6. Change to the created branch.
7. Make a change and commit on the branch.
8. Push the new commit from the branch.