3 questions concerning git push --force :
Is there a way to detect when someone on a team make a git push --force ?
Is it-possible to make a hook that send an email when my local git installation detect that a git push --force ?
Is there a way to see if some commit disappear on my branch after this git push --force ?
Is there a way to detect when someone on a team make a git push --force ?
Yes.
You have this hook which you can use:
https://github.com/kyanny/git-hooks-detect-force-update
Is it-possible to make a hook that send an email when my local git installation detect that a git push --force ?
The first answer is hook so you can send email from the hook.
Is there a way to see if some commit disappear on my branch after this git push --force ?
Not directly, you will have to scan the repo for dangling objects.
git fsck --full
But in the hook above you will get the commits which will be remove
