The title points to a familiar Git problem: a rebase can rewrite a branch, but a preview is only useful if you know what it shows—and what it cannot promise. The accessible DEV Community listing identifies the post’s author as ferchichibaha7 and describes it as a two-minute read published on September 21, but does not reveal the tool’s name or implementation. That means its specific capabilities cannot be established from the listing alone.
What happens when you rebase?
Git rebase transplants a series of commits onto a different base. In broad terms, Git identifies the commits to replay, checks out the new base, replays those commits, and moves the branch to the final resulting commit. The new commits are replayed results; the original branch tip is not simply moved intact onto the new base. See the official git-rebase manual for the operation’s details.
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Interactive rebase can also let you change the order of commits or combine them. Because Git applies commits during the operation, a conflict can stop the replay. You may need to resolve the conflict and continue, skip the affected commit, or abort the rebase.
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What can a preview tell you before a rebase?
“Preview” can mean different things. A displayed commit sequence can show which commits are proposed for replay and in what order. A diff can help you inspect changes. Neither view, by itself, proves that Git will complete the rewrite cleanly or that the resulting tree will have the effects you intend.
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A preview that does not actually perform the replay cannot establish whether conflicts will occur during it. Even a proposed sequence or patch is not a substitute for checking the outcome of the completed operation. The accessible listing for the DEV post does not identify its tool, say whether it shows a graph or a diff, or explain whether it executes a rewrite in isolation. Its title alone cannot establish those details.
How should you check a history change?
Before changing history, identify the commits you intend to replay and the base you intend to use. If you use a preview tool, check what it presents: the commit order, the patch, or both. Treat those views as evidence to inspect, not as a guarantee about conflicts, the final tree, or the effect on collaborators.
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After a rebase, inspect the resulting branch and run the checks appropriate to your project. If you are working with commits already shared with others, coordinate before rewriting or updating the shared history; a local preview cannot establish that other contributors’ work will be unaffected.
What if the result is wrong?
During a rebase, Git provides ways to resolve a conflict and continue, skip a commit, or abort the operation. Once a rebase has completed, Git sets ORIG_HEAD when starting it, but the manual warns that other commands can change that reference. The branch reflog is the documented place to find its earlier tip; recovery is not a blanket guarantee that every rewrite is harmless or trivially reversible. Consult the rebase manual and the Pro Git chapter on rewriting history for more context.
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