openlayers/openlayers — comment on commit fb3caf1561f9db9c4516b12cd712217a04910cf8
File:  line 0
By ahocevar:

@elemoine: If you look at a merge commit in github, you see all its parents. Now if you want to revert a merge commit, you have to check which parent is the one you want to go back. They are numbered from 1..n, in the order listed in github. So in my case it was parent #2, and I just said

git revert 12f191a690aa2e0166962553889ad1c4027d8254 -m2

with ```-m2``` pointing to parent #2.