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30 lines
970 B
Text
30 lines
970 B
Text
title = Undo a bad commit
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cards = reset commit-a
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[description]
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Oh no, we made a bad commit! How can we undo making the commit, and go back to a point where we can try again?
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The answer is using `git reset [commit]`, which does two things:
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- It resets the current branch ref to the commit you specify.
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- And it resets the index to that commit.
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It does not change your working directory in any way, which means that after that, you can try making the commit you want again.
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[setup]
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echo "1 2 3 4" > numbers
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git add .
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git commit -m "Initial commit"
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echo "1 2 3 4 5 6 7 8 9 11" > numbers
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git commit -am "More numberrrrrs"
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[win]
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# In the last main commit, the numbers file contains the numbers from 1 to 10.
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test "$(git show main:numbers)" = "1 2 3 4 5 6 7 8 9 10"
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# The commit message of that commit is "More numbers".
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git log -1 --oneline | grep "More numbers"
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# The commit with the typo is not part of the main branch anymore.
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git log --oneline | grep -v "rrrrr"
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