DevOps

Overview “cannot merge’” class errors in Git typically mean Git refuses to create a merge commit right now. Common causes include: Unmerged files or an unfinished merge Untracked files would be overwritten Unrelated......

What this error means Git reports "fatal: rebase in progress" when a previous rebase has not finished and you try to start another operation that conflicts with it (e.g., pull, merge, or another rebase). You must either continue......

What this error means Git found an unfinished rebase in your repository. You likely started a rebase, hit conflicts, and then tried another Git operation (e.g., rebase again, pull --rebase, merge, or switch branches). Git blocks the new......

Overview You ran git pull and got: error: Pulling is not possible because you have unmerged files. This happens when a previous merge, rebase, or cherry-pick left conflicts unresolved. Git blocks pulling to prevent overwriting unresolved......

What this error means Git blocks a rebase-based pull when your working tree has unstaged changes. Command that triggers it: git pull --rebase You’ll see: error: cannot pull with rebase: You have unstaged changes error: please commit or......

Overview When Git says “error: You have unmerged files,” a merge or rebase created conflicts that must be resolved before Git can proceed. The fix is always: inspect conflicts, choose the correct content per file, stage the resolutions,......

What this error means Git created a merge commit but stopped because there are conflicts or the merge was left incomplete. The presence of .git/MERGE_HEAD tells Git a merge is in progress. Until you resolve or abort it, commands like......

What the error means Git shows "fatal: refusing to merge unrelated histories" when two branches have no common ancestor (e.g., a local repo and a remote initialized separately with their own first commits). This is common......

What this error means You see this when Git is asked to fast‑forward only (e.g., git pull --ff-only or git merge --ff-only) but your branch has diverged from its upstream. A fast‑forward is possible only if your branch tip is an ancestor......

Overview Git needs an identity (user.name and user.email) to record who authored and committed changes. If these aren’t set, git commit stops with: Please tell me who you are This guide shows quick fixes, per-repo vs global configuration,......

What this error means You ran a Git command on a path nested under a directory that is a submodule. The superproject tracks the submodule as a single gitlink (a commit pointer), not as individual files, so commands like git add, git......

What this error means Git prints fatal: Not a valid object name: master/main when it cannot resolve the revision string master/main into a commit, tag, or tree. This typically happens when: You meant origin/main (a remote branch) but......