Large test data file and github

I am executing the test run in bamboo, using git as my repository. Now I need to run a test which checks upon a large data upload (where the file size is approx. 400MB. As the limit on github is 100MB, when I try to push this large file, the git push times out. Is there any other way I can execute my test from github, getting this file from any other location ? or is there a way to push this file to git?