Impossible to push commit to protected branch if SHA starts with 7 zeros 0000000
Created by: cirosantilli
Fixed by: https://github.com/gitlabhq/gitlabhq/pull/8231
To reproduce, use: https://github.com/bradfitz/gitbrute to create the commit. I have one created at: https://github.com/cirosantilli/test-github/tree/0000000