Backup your working directory.

[bitfishxyz]

Once you have committed, timeline is unchangable. But you can change you working directory with follw commands

git checkout -- <file>

• if it have not add to stage, then back up to last commit.
• if it have add to stage, then back up to last commit + changes in stage.

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git reset HEAD <file>

throw change on stage.

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git reset --hard commitID

back working directory to snapshot of commitID

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git reflog

see all commit ID