Importing source code to GitHub
You can import repositories to GitHub using GitHub Importer, the command line, or external migration tools.
About GitHub Importer→
If you have source code in Subversion, Mercurial, Team Foundation Version Control (TFVC), or another Git repository, you can move it to GitHub using GitHub Importer.
Importing a repository with GitHub Importer→
If you have a project hosted on another version control system, you can automatically import it to GitHub using the GitHub Importer tool.
Updating commit author attribution with GitHub Importer→
During an import, you can match commits in your repository with the GitHub account of the commit author.
Importing a Git repository using the command line→
If GitHub Importer is not suitable for your purposes, such as if your existing code is hosted on a private network, then we recommend importing using the command line.
Adding an existing project to GitHub using the command line→
Putting your existing work on GitHub can let you share and collaborate in lots of great ways.
Source code migration tools→
You can use external tools to move your projects to GitHub.