The following is a link to a browsable version of the source repository:
The source can be checked out anonymously from Git with this command (See https://git-scm.com/docs/git-clone):
$ git clone --branch github-api-1.302 email@example.com/hub4j/github-api.git
Only project developers can access the Git tree via this method (See https://git-scm.com/docs/git-clone).
$ git clone --branch github-api-1.302 ssh://firstname.lastname@example.org/hub4j/github-api.git
Refer to the documentation of the SCM used for more information about access behind a firewall.