If your project has multiple teams add changes (code, deliverables, data, etc.) to your team folder.
Create a new branch from your team branch, add changes to your team folder (on the new branch you just created).
Open a Pull Request to your team branch (ex. branch name: team-a). Add your TA and TPM as reviewers. Do not delete any team folders.
At the end of the semester during project wrap up open a final Pull Request to dev from your team branch.