How do i delete the last 3 commits?

Question

How do i delete the last 3 commits? there is probably many examples but I think i ma being very specific here with what I want.

So for example I have done a git add . and git commit -m "message" and a git push -u origin master for all these.

I have the following output from all my commits(with 21 being the most recent commit)

$git log --pretty=oneline [[33mab18ba3884244e99d99122e788062b2aaf6ba372[[m commit-21 [[33m9625c19e03a747457162d7c0274d75b154a0b926[[m commit-20 [[33m8668df12af9eee540cc29f9deb6d31d873bb8f24[[m commit-19 [[33m8315cd7962c902d39160fcf2fd018f249e7cf744[[m commit-18 [[33m3bcecc602a70fb60324777831d51c81b6f9ccaa7[[m commit-17 [[33m0485a39c37e72eabb4003e07a6b8cbae7a0d4e25[[m commit-16 [[33m9d3b04a7bcbb82be8b6b7882511f8133745c93b6[[m commit-15 [[33m22c259497571390fdd1461f0dd6b77244851984b[[m commit-14 [[33m39fb965fc245be55bb86491b5871dd2def08fdf4[[m commit-13 [[33m299f6bb77e922d707c9981a48d4d75f57b724719[[m commit-12 [[33me7285377d7afc08c7a5fb0ca44154d2de7e1d275[[m commit-11 [[33mb3360786ef13044d13b6e58c2239cce5595a1abf[[m commit-10 [[33m9af4c134e0d239d1c34fc6bb6087f0473c187fd5[[m commit-9 [[33md55ac3370f506a4bbf8a4690b9285e5de9c6a671[[m commit-8 [[33me50ef5f58b18d05c36343114804d8be180d26bcb[[m commit-7 [[33m962e4a8de7649e06df29f9058a600f8318caf023[[m commit-6 [[33m37f5363f62a3f973fe6e0d516e47b4324186d998[[m commit-5 [[33m0033e32339e4dc0cce8bd208d43b18a4e9ab43d9[[m commit-4 [[33m345239c740a408826f1df0dc5592d5d6b355f019[[m commit-3 [[33m8c85bf2592f52302ff389a5b6af4127fbe04c73b[[m commit-2 [[33ma4077b6c2b6a491af72ae3afc3b5c6260090b605[[m commit-1 

What I want to do is effectively delete the last 3 commits and end up with this:(So it was like git commit 19, 20 and 21 never happened)

$git log --pretty=oneline [[33m8315cd7962c902d39160fcf2fd018f249e7cf744[[m commit-18 [[33m3bcecc602a70fb60324777831d51c81b6f9ccaa7[[m commit-17 [[33m0485a39c37e72eabb4003e07a6b8cbae7a0d4e25[[m commit-16 [[33m9d3b04a7bcbb82be8b6b7882511f8133745c93b6[[m commit-15 [[33m22c259497571390fdd1461f0dd6b77244851984b[[m commit-14 [[33m39fb965fc245be55bb86491b5871dd2def08fdf4[[m commit-13 [[33m299f6bb77e922d707c9981a48d4d75f57b724719[[m commit-12 [[33me7285377d7afc08c7a5fb0ca44154d2de7e1d275[[m commit-11 [[33mb3360786ef13044d13b6e58c2239cce5595a1abf[[m commit-10 [[33m9af4c134e0d239d1c34fc6bb6087f0473c187fd5[[m commit-9 [[33md55ac3370f506a4bbf8a4690b9285e5de9c6a671[[m commit-8 [[33me50ef5f58b18d05c36343114804d8be180d26bcb[[m commit-7 [[33m962e4a8de7649e06df29f9058a600f8318caf023[[m commit-6 [[33m37f5363f62a3f973fe6e0d516e47b4324186d998[[m commit-5 [[33m0033e32339e4dc0cce8bd208d43b18a4e9ab43d9[[m commit-4 [[33m345239c740a408826f1df0dc5592d5d6b355f019[[m commit-3 [[33m8c85bf2592f52302ff389a5b6af4127fbe04c73b[[m commit-2 [[33ma4077b6c2b6a491af72ae3afc3b5c6260090b605[[m commit-1 

Note: I have looked into this and can't quiet get what I want. I have tried git revert(this is advise if I have published which I presume is the same as git push -u origin master) git rebase git reset
I am not concerned with my remote at this stage I jsut want to get my local repo put back a couple of repos.

Answer 1

use can use git reset for that

git reset --hard HEAD~3  git push --force origin master 

where HEAD~3 means go back 3 commits

You can also use the commit number instead of 3 commits, so that you are sure where you are going back in time, like

git reset --hard 8315cd7962c902d39160fcf2fd018f249e7cf744 

EDIT:

When rewriting history, prefer using

git push origin +master 

To be safe if you are ever pushing more than one branch. You can read more at Git Force push syntax, "-f" versus "+branch"

(kudor to Josef Kufner comment pointing it out)

EDIT 2:

I just noticed that your log is printing colors as codes, So

git reset -- hard 33m8315cd7962c902d39160fcf2fd018f249e7cf744  

will not work, [[33m and [[m are color codes! So your commit number is actually 8315cd7962c902d39160fcf2fd018f249e7cf744

If you do

git reset --hard 8315cd7962c902d39160fcf2fd018f249e7cf744 

it should work as well.

(Fixed the commit code on previous examples as well)