SHELL

git undo merge

git reset --hard HEAD~1

Undo git merge

git reset --merge HEAD~1

git revert merge

git revert -m 1 <merge-commit>

revert last merge git

git revert -m 1 commit_hash

git undo merge

git reset --hard HEAD~1
git reset --hard <commit_sha>

how to revert a merge locally

git reset --hard <cbm>

where cbm is the commit number before the merge you want to revert
to get a list of all the merges you can use the following line

git log --graph

and then use the commit number from the one before the merge you want to revert

undo merge

// find the commit hash
git log --oneline

git revert -m 1 [commit-hash]

// https://www.datree.io/resources/git-undo-merge

revert local merge

git reset --merge origin/master

git reset to Undo a Merge

$ git reset --hard <commit-before-merge>

git revert merge commit

// In this situation, will get you the tree as it was in 8989ee0
git revert <commit hash> -m 1 

//will reinstate the tree as it was in 7c6b236
git revert -m 2

how to undo a merge in git

git reset --merge a9fdeb5