https://docs.github.com/de/enterprise-server@3.5/migrations/importing-source-code/using-the-command-line-to-import-source-code/importing-a-team-foundation-version-control-repository
Importing a Team Foundation Version Control repository - GitHub Enterprise Server 3.5 Docs
You can import a repository from Team Foundation Version Control (TFVC) by converting the repository to Git, then pushing the Git repository to GitHub...
version control repositorya teamgithub enterpriseimportingfoundation