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git bisect

Use binary search to find the commit that introduced a bug. Git automatically jumps back and forth in the commit graph to progressively narrow down the faulty commit. More information:

  • Start a bisect session on a commit range bounded by a known buggy commit, and a known clean (typically older) one:

git bisect start {{bad_commit}} {{good_commit}}

  • For each commit that git bisect selects, mark it as "bad" or "good" after testing it for the issue:

git bisect {{good|bad}}

  • After git bisect pinpoints the faulty commit, end the bisect session and return to the previous branch:

git bisect reset

  • Skip a commit during a bisect (e.g. one that fails the tests due to a different issue):

git bisect skip

  • Display a log of what has been done so far:

git bisect log