To use git bisect to find the commit that introduced a regression bug, follow these steps:
Start the bisect process by running git bisect start[1][4].
Mark the current (bad) commit where the bug is present using git bisect bad[1][4].
Specify a known good commit where the bug did not exist using git bisect good <commit>[1][4][5]. This allows git to perform a binary search between the good and bad commits.
git bisect will now check out a commit in the middle of the range and instruct you to test it. If the bug is present, mark it as bad with git bisect bad. If the bug is not present, mark it as good with git bisect good[1][4][5].
git bisect will then narrow down the range and check out another commit for you to test. Repeat step 4, marking each commit as good or bad, until git bisect identifies the first bad commit that introduced the regression[1][2][4].
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