8/14/2023 0 Comments Git branch rmThe filter is what tells Git how to rewrite the history.That’s because filter-branch won’t start if there’s an existing refs/original/ directory, so we need to force remove the existing files. A previous backup already exists in refs/original/. You can try running without this, but you might get this error: Cannot create a new backup.Let’s dig into what all this means before we run it: env file with the following git filter-branch command, which I found in GitHub’s docs, but the command could also be pieced together using the git filter-branch documentation: git filter-branch -force -index-filter \ Now that we know the state of our repo, we can prepare to remove the. Before we fix that, let’s check the state of our tags by running git tag: tag1 env files into our repos because they hold a lot of sensitive information. If you clone this repo down and run git log -one-line, you’ll notice that I have a suspicious commit: de6515f docs: link to git scrubbing article in readme Git Filter-branch in Actionįirst, I’m going to cd into my Git scrubbing example repo. So with intentionality and understanding, let’s move forward with a git filter-branch. The key is to know when to do it and why. Rewriting the history of a repo is a pretty powerful move, but it’s no more dangerous than rebasing, which we do a lot at Sparkbox in order to maintain a linear history. It’s important to understand why you’re doing it and how it’s going to work. Why are these documents written with such strong warnings? Because rewriting the entirety of a project’s Git history is a serious action. There are a few tools that can help you do this ( git filter-branch, BFG Repo Cleaner, and git filter-repo to name a few), and all of the documentation around them seems intended to frighten the reader, who I imagine is an already frantic developer who’s just realized they’ve compromised their application. In this case, we need to rewrite our Git history, both on local and remote, to remove any trace of our sensitive data. Another example might be if your private package artifacts are committed publicly. An example of unchangeable sensitive data might be a license key that you only get one of (like old school Photoshop or a CMS) and can’t change without communicating with customer service. Let’s talk about what to do when your sensitive data is compromised and you can’t change the password, token, or key. PSA: Any time you send passwords or other sensitive data to your remote repo, you should consider it compromised and update the password. If you did push the sensitive data up, however, you need to git push -f the amended commit you just made, and you need to change your password/token/key. If you did not push your commit containing sensitive data to a Git repo hosting service like GitHub, you can use the existing password/token/key after running those commands since you only worked with it locally. These commands will remove the file containing your password and rewrite your commit without it. Great! Let’s scrub, or remove, the file containing the sensitive data from our repository by running the following commands in order: git rm -cached Do you have the power to change the value of the sensitive data? Whew, I Can Change the Password/Token/Key Apply Today I Committed Some Sensitive Info ![]() ![]() We’re Hiring Frontend Developers!ĭo you have a solid knowledge of HTML, CSS, and JavaScript while being mindful of the diverse ecosystem of devices and connections? We’re looking for experienced Frontend Developers who love to learn and collaborate. Let’s take a look at a couple of situations where you may need to scrub your repo and how you would go about doing so. Keep in mind that preventing those mistakes is the ideal solution, but, if you find yourself in the position where this already happened, I want to help. The canonical term for fixing those mistakes is Git scrubbing, which is just a fancy phrase for removing passwords, API tokens, license keys, etc. One of those is committing sensitive data to our Git repositories.
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