git undo all uncommitted or unsaved changes

Question

I'm trying to undo all changes since my last commit. I tried git reset --hard and git reset --hard HEAD after viewing this post. I responds with head is now at 18c3773... but when I look at my local source all the files are still there. What am I missing?

Answer 1

States transitioning from one commit to new commit

0. last commit,i.e. HEAD commit
1. Working tree changes, file/directory deletion,adding,modification.
2. The changes are staged in index
3. Staged changes are committed

Action for state transitioning

0->1: manual file/directory operation
1->2: git add .
2->3: git commit -m "xxx"

Check diff

0->1: git diff
0->2: git diff --cached
0->1, and 0->2: git diff HEAD
last last commit->last commit: git diff HEAD^ HEAD

Revert to last commit

2->1: git reset
1->0: git checkout .     #only for tracked files/directories(actions include modifying/deleting tracked files/directories)
1->0: git clean -fdx     #only for untracked files/directories(action includes adding new files/directories)
2->1, and 1->0: git reset --hard HEAD

Equivalent of git clone, without re-downloading anything

git reset; git checkout .; git clean -fdx

Answer 2

there is also git stash - which "stashes" your local changes and can be reapplied at a later time or dropped if is no longer required

more info on stashing

Answer 3

• This will unstage all files you might have staged with git add:

  git reset
  

• This will revert all local uncommitted changes (should be executed in repo root):

  git checkout .
  

  You can also revert uncommitted changes only to particular file or directory:

  git checkout [some_dir|file.txt]
  

  Yet another way to revert all uncommitted changes (longer to type, but works from any subdirectory):

  git reset --hard HEAD
  

• This will remove all local untracked files, so only git tracked files remain:

  git clean -fdx
  

  WARNING: -x will also remove all ignored files, including ones specified by .gitignore! You may want to use -n for preview of files to be deleted.

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To sum it up: executing commands below is basically equivalent to fresh git clone from original source (but it does not re-download anything, so is much faster):

git reset
git checkout .
git clean -fdx

Typical usage for this would be in build scripts, when you must make sure that your tree is absolutely clean - does not have any modifications or locally created object files or build artefacts, and you want to make it work very fast and to not re-clone whole repository every single time.

Answer 4

I'm using source tree.... You can do revert all uncommitted changes with 2 easy steps:

1) just need to reset the workspace file status

2) select all unstage files (command +a), right click and select remove

It's that simple :D

Answer 5

If you wish to "undo" all uncommitted changes simply run:

git stash
git stash drop

If you have any untracked files (check by running git status), these may be removed by running:

git clean -fdx

git stash creates a new stash which will become stash@{0}. If you wish to check first you can run git stash list to see a list of your stashes. It will look something like:

stash@{0}: WIP on rails-4: 66c8407 remove forem residuals
stash@{1}: WIP on master: 2b8f269 Map qualifications
stash@{2}: WIP on master: 27a7e54 Use non-dynamic finders
stash@{3}: WIP on blogit: c9bd270 some changes

Each stash is named after the previous commit messsage.

Answer 6

For those who reached here searching if they could undo git clean -f -d , by which a file created in eclipse was deleted,

You can do the same from the UI using "restore from local history" for ref:Restore from local history