Note: Rebase is a dangerous command, use with care, or you can delete some of your code. You will now be able to complete and merge your pull request. You’ll notice the commit has been removed. If we need to abort the rebase process, run this code:.The “-f” is a force – you may need to be an administrator to complete the force command: In the text file, we find the commits we want to remove, delete those lines, and then save and close the file.This rebase starts a sort of transaction, if you need to abort, skip to step 6. 10 commits), we would want to include a higher number to capture those. If our secret is further in the past (e.g. Now we open the commit list into a text file, where the number (5) is the number of commits to include.First, we identify the commits we need to remove in the target branch, recording the commit “SHA” ids for later.It’s interesting there is no UI for this yet, but after intensive research into options, we believe this is the easiest path to solve the problem. Of course, if we do accidentally push a secret to a Pull Request in a public repo, we always should assume the secret is compromised and recycle the secret. Delete the branch when the pull request is done, cleaning up our workspace and working.Note that this working is still visible inside the pull request – we will see this later. Merge commits into one commit when the pull request is completed, helping to hide our working.By ensuring that GitGuardian or CredScan is setup as a merge policy, accidental secrets will only be on feature branches – limiting exposure. Using branch policies to ensure we can’t accidentally merge secrets into the main branch.This can be achieved with the combination of a few strategies: Preventing secrets with Pull Requestsīefore we look at how to deal with pull request commit secrets, first, let’s look at prevention – the best long term solution is to prevent the secrets from being added. The second is secrets committed in a branch and pushed via a Pull Request, where we want to remove the commit before we complete the pull request. The first, is secrets in commits on the main branch. We have two scenarios where secrets can appear in commits. Surprise! – it unexpectedly found some secrets in our Feature Flags repo… These secrets can include cloud keys, such as Azure/AWS/GCP storage keys, connection strings, or passwords.Ī few weeks ago we setup GitGuardian to scan all of our repos in GitHub, including all commits and pull requests. Secret scanners such as GitHub’s GitGuardian and Azure DevOps CredScan are valuable tools to identify secrets in our code. Before we continue, we want to offer thanks and credit to Ashley Grant, who offered expert advice and collaborated to help work out the BFG piece! Today we are going to look at how to remove secrets from our repositories and prevent these mistakes from happening again. Mistakes can happen – we certainly make many.
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