Spurious CI failures when cloning

[allanrenucci]

Drone sometime fails to clone on PR because of a bug with GitHub.

A workaround is described in this discussion

[CucumisSativus]

@allanrenucci on my way with fixing it

[CucumisSativus]

@allanrenucci according to https://discourse.drone.io/t/solved-issues-when-cloning-github-pr/482/15 looks like the issue is solved on plugin level, probably after plugin update the issue does not need a workaround

[allanrenucci]

I have restarted the CI, hopefully it will pick up the latest version of the git plugin

[nicolasstucki]

Currently it is failing on every push I make :(