Software⏱️ 2 min read📅 2026-05-31

How to Fix: fatal: git-write-tree: error building trees

Git error after pull and revert operation.

Quick Answer: Try a git reset --hard to discard local changes and start fresh, then proceed with a git clean -fx to remove unmerged files.

📋 Table of Contents

  1. 💡 Why You Are Getting This Error
  2. 🔧 Proven Troubleshooting Steps
  3. 🎯 Final Words

The 'fatal: git-write-tree: error building trees' error typically occurs when there are merge conflicts in the repository that cannot be resolved by the user. This can happen after a pull operation from a shared repository, especially if the changes made by you or others in the repository are not compatible.

💡 Why You Are Getting This Error

  • [Cause]

🔧 Proven Troubleshooting Steps

Method 1: Force Push

  1. Step 1: Run the command git push --force-with-lease origin HEAD to force-push your local changes to the remote repository.

Method 2: Revert and Pull

  1. Step 1: Use git revert to create a new commit that undoes the changes made by you or others in the repository.

🎯 Final Words

To avoid this issue in the future, make sure to resolve merge conflicts before pushing your changes to a shared repository. If you're not comfortable resolving conflicts manually, consider using tools like git merge --abort or git cherry-pick to simplify the process.

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