Git revert merge
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For example, the following command will figure out the changes contained in the 2nd to last commit, create a new commit undoing those changes, and tack the new commit onto the existing project. In my simple example, I think the mainline is 2, so I think I want to do git revert -m 1 since 2 is the first of the parents listed since commit 2 is on master, which I think is equivalent to mainline, but I'm not really sure. Instead of using git-revert you could have used this command in the devel branch to throw away undo the wrong merge commit instead of just reverting it.
Reverting a merge commit declares that you will never want the tree changes brought in by the merge. Lucky for me, Nick Quranto had , pointed me toward on the subject and was happy to answer my questions via email. Git revert normally operates on commits with only a single parent.
In this case, you probably want to move the Production branch pointer to C2. Does that mean these changes that I'm reverting will never be applied if I try to re-merge them later from the same branch? It just moves the commit pointer ahead when it can. Out of the box, Storefront supports deep integration with WooCommerce, which makes it a perfect starting point for developers to launch their projects. Ok, so I have to tell git which parent is the mainline, but how do I figure that out? In this case, you will want to reset your branch with git reset --hard. Not the answer you're looking for? I simply git reset --hard 43b6032 to force this branch to track from before the merge, and carry-on. Having them run that command locally will help you grasp how far-reaching the problem is. As it happened, I managed to merge a feature branch into our mainline that was not completely finished. If this happens to you, I hope these guidelines help.
Fixing Things: Git Reset vs. Revert - I didn't mean to merge, so I'd like to undo it.
The git revert command can be considered an 'undo' type command, however, it is not a traditional undo operation. Instead of removing the commit from the project history, it figures out how to invert the changes introduced by the commit and appends a new commit with the resulting inverse content. This prevents Git from losing history, which is important for the integrity git revert merge your revision history and for reliable collaboration. Reverting should be used when you want to apply the inverse of a commit from your project history. Instead of manually going in, fixing it, and committing a new snapshot, you can use git revert to automatically do all of this for you. How it works The git revert command is used for undoing changes to a repository's commit history. Git revert also takes a specified commit, however, git revert does not move ref pointers to this commit. The ref pointers are then updated to point at the new revert commit making it the tip of the branch. At the end of the repo setup procedure, we invoke git log to display the commit history, showing git revert merge total of 3 commits. With the repo in this state, we are ready to initiate a git revert. This will revert the latest commit. This is the same behavior as git revert merge we reverted to commit 3602d8815dbfa78cd37cd4d189552764b5e96c58. Similar to a merge, a revert will create a new commit which will open up the configured system editor prompting for a new commit message. Once a commit message has been entered and saved Git will resume operation. Instead of deleting it, git revert added a new commit to undo its changes. As a result, the 2nd and 4th commits represent the exact same code base and the 3rd commit is still in our history just in case we want to go back to it down the road. Common options -e --edit This is a default option and doesn't need to be specified. This option will open the configured system editor and prompts you to edit the commit message prior to committing the revert. The revert will not open the editor. Instead of creating the new commit this option will add the inverse changes to the Staging Index and Working Directory. These are the other trees Git uses to manage state the state of the repository. For more info visit the page. In Git, this is actually called a reset, not a revert. Reverting has two important advantages over resetting. For details about why altering shared history is dangerous, please see the page. Second, git revert is able to target an individual commit at an arbitrary point in the history, whereas git reset can only work backward from the current commit. For example, if you wanted to undo an old commit with git reset, you would have to remove all of the commits that occurred after the target commit, remove it, then re-commit all of git revert merge subsequent commits. Needless to say, this is not an elegant undo solution. For a more detailed discussion on the differences between git revert and other 'undo' commands see Summary The git revert command is a forward-moving undo operation that offers a safe method of undoing changes. Instead of deleting or orphaning commits in the commit history, a revert will create a new commit that inverses the changes specified. Git revert is a safer alternative to git reset in regards to losing work. To demonstrate the effects of git revert we leveraged other commands that have more in-depth documentation on their individual pages:, and.
