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I am a git novice, and can't really understand the answers to similar questions. Sorry. I made a bad mistake many months ago and need to fetch a previous version and make it the current one. Since I couldn't figure out how to do this elegantly, I did it by brute force - downloading a zip file with the version I wanted then unzipping it and using commit and push to make it the latest version. If SHA is the identity of the version I want to "promote", exactly what is the git CLI command to accomplish this?

Ronan Boiteau
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dms489
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2 Answers2

1

After cloning your repo, go to that directory and check SHA id from git log:

Try: 

git log

Then:

# Resets index to former commit; replace '<commit_id>' with your commit code
git reset <commit_id>

# Moves pointer back to previous HEAD
git reset --soft HEAD@{1}

git commit -m "Revert to <commit_id>"

# Updates working copy to reflect the new commit
git reset --hard

For more info, visit this link: How to revert Git repository to a previous commit?

Ronan Boiteau
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MD Ruhul Amin
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  • I just put a comment on Answer 0, but it seems this does exactly what I wanted, bringing the last good file to the top, and leaving the rest of the "stack" alone - is that right? – dms489 Feb 17 '18 at 17:04
  • yeah, it is. @dms489. FYI, you can also start a new branch leaving the old one untouched by doing, `git checkout -b `. And do what ever you want to do with `` – MD Ruhul Amin Feb 18 '18 at 09:38
1
  1. Use git log to get the SHA-1 hash of the commit you want to fetch.
  2. git reset --hard [your_commit_hash]
  3. git push --force

Warning: this will completely erase all the commits you made since the commit you git reset to!

Ronan Boiteau
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  • Thanks for the quick reply. I don't mind losing all the intermediate versions, but would like to keep the latest in the bad series of events for reference. So I have 2 SHAs - SHA last_good and SHA_latest_bad. When I finish I'd like to have SHA_last_good on the top of the "stack" and SHA_latest_bad beneath it. Is that possible? – dms489 Feb 17 '18 at 16:52
  • In this case, you can use `git reset` and `git push --force` to restore the latest bad commit and then commit again your latest good commit using your brute force method. – Ronan Boiteau Feb 17 '18 at 17:03
  • You can save the bad commit history by putting a branch there. Intuitively, that's probably what you want to do anyway. – Mad Physicist Mar 03 '18 at 21:28