1GIT-RESET(1)                      Git Manual                      GIT-RESET(1)
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NAME

6       git-reset - Reset current HEAD to the specified state
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SYNOPSIS

9       git reset [-q] [<tree-ish>] [--] <paths>...
10       git reset (--patch | -p) [<tree-sh>] [--] [<paths>...]
11       git reset [--soft | --mixed | --hard | --merge | --keep] [-q] [<commit>]
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13

DESCRIPTION

15       In the first and second form, copy entries from <tree-ish> to the
16       index. In the third form, set the current branch head (HEAD) to
17       <commit>, optionally modifying index and working tree to match. The
18       <tree-ish>/<commit> defaults to HEAD in all forms.
19
20       git reset [-q] [<tree-ish>] [--] <paths>...
21           This form resets the index entries for all <paths> to their state
22           at <tree-ish>. (It does not affect the working tree, nor the
23           current branch.)
24
25           This means that git reset <paths> is the opposite of git add
26           <paths>.
27
28           After running git reset <paths> to update the index entry, you can
29           use git-checkout(1) to check the contents out of the index to the
30           working tree. Alternatively, using git-checkout(1) and specifying a
31           commit, you can copy the contents of a path out of a commit to the
32           index and to the working tree in one go.
33
34       git reset (--patch | -p) [<tree-ish>] [--] [<paths>...]
35           Interactively select hunks in the difference between the index and
36           <tree-ish> (defaults to HEAD). The chosen hunks are applied in
37           reverse to the index.
38
39           This means that git reset -p is the opposite of git add -p, i.e.
40           you can use it to selectively reset hunks. See the “Interactive
41           Mode” section of git-add(1) to learn how to operate the --patch
42           mode.
43
44       git reset [<mode>] [<commit>]
45           This form resets the current branch head to <commit> and possibly
46           updates the index (resetting it to the tree of <commit>) and the
47           working tree depending on <mode>. If <mode> is omitted, defaults to
48           "--mixed". The <mode> must be one of the following:
49
50           --soft
51               Does not touch the index file nor the working tree at all (but
52               resets the head to <commit>, just like all modes do). This
53               leaves all your changed files "Changes to be committed", as git
54               status would put it.
55
56           --mixed
57               Resets the index but not the working tree (i.e., the changed
58               files are preserved but not marked for commit) and reports what
59               has not been updated. This is the default action.
60
61           --hard
62               Resets the index and working tree. Any changes to tracked files
63               in the working tree since <commit> are discarded.
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65           --merge
66               Resets the index and updates the files in the working tree that
67               are different between <commit> and HEAD, but keeps those which
68               are different between the index and working tree (i.e. which
69               have changes which have not been added). If a file that is
70               different between <commit> and the index has unstaged changes,
71               reset is aborted.
72
73               In other words, --merge does something like a git read-tree -u
74               -m <commit>, but carries forward unmerged index entries.
75
76           --keep
77               Resets index entries and updates files in the working tree that
78               are different between <commit> and HEAD. If a file that is
79               different between <commit> and HEAD has local changes, reset is
80               aborted.
81
82       If you want to undo a commit other than the latest on a branch, git-
83       revert(1) is your friend.
84

OPTIONS

86       -q, --quiet
87           Be quiet, only report errors.
88

EXAMPLES

90       Undo add
91
92               $ edit                                     (1)
93               $ git add frotz.c filfre.c
94               $ mailx                                    (2)
95               $ git reset                                (3)
96               $ git pull git://info.example.com/ nitfol  (4)
97
98           1. You are happily working on something, and find the changes in
99           these files are in good order. You do not want to see them when you
100           run "git diff", because you plan to work on other files and changes
101           with these files are distracting.
102           2. Somebody asks you to pull, and the changes sounds worthy of
103           merging.
104           3. However, you already dirtied the index (i.e. your index does not
105           match the HEAD commit). But you know the pull you are going to make
106           does not affect frotz.c nor filfre.c, so you revert the index
107           changes for these two files. Your changes in working tree remain
108           there.
109           4. Then you can pull and merge, leaving frotz.c and filfre.c
110           changes still in the working tree.
111
112       Undo a commit and redo
113
114               $ git commit ...
115               $ git reset --soft HEAD^      (1)
116               $ edit                        (2)
117               $ git commit -a -c ORIG_HEAD  (3)
118
119           1. This is most often done when you remembered what you just
120           committed is incomplete, or you misspelled your commit message, or
121           both. Leaves working tree as it was before "reset".
122           2. Make corrections to working tree files.
123           3. "reset" copies the old head to .git/ORIG_HEAD; redo the commit
124           by starting with its log message. If you do not need to edit the
125           message further, you can give -C option instead.
126
127           See also the --amend option to git-commit(1).
128
129       Undo a commit, making it a topic branch
130
131               $ git branch topic/wip     (1)
132               $ git reset --hard HEAD~3  (2)
133               $ git checkout topic/wip   (3)
134
135           1. You have made some commits, but realize they were premature to
136           be in the "master" branch. You want to continue polishing them in a
137           topic branch, so create "topic/wip" branch off of the current HEAD.
138           2. Rewind the master branch to get rid of those three commits.
139           3. Switch to "topic/wip" branch and keep working.
140
141       Undo commits permanently
142
143               $ git commit ...
144               $ git reset --hard HEAD~3   (1)
145
146           1. The last three commits (HEAD, HEAD^, and HEAD~2) were bad and
147           you do not want to ever see them again. Do not do this if you have
148           already given these commits to somebody else. (See the "RECOVERING
149           FROM UPSTREAM REBASE" section in git-rebase(1) for the implications
150           of doing so.)
151
152       Undo a merge or pull
153
154               $ git pull                         (1)
155               Auto-merging nitfol
156               CONFLICT (content): Merge conflict in nitfol
157               Automatic merge failed; fix conflicts and then commit the result.
158               $ git reset --hard                 (2)
159               $ git pull . topic/branch          (3)
160               Updating from 41223... to 13134...
161               Fast-forward
162               $ git reset --hard ORIG_HEAD       (4)
163
164           1. Try to update from the upstream resulted in a lot of conflicts;
165           you were not ready to spend a lot of time merging right now, so you
166           decide to do that later.
167           2. "pull" has not made merge commit, so "git reset --hard" which is
168           a synonym for "git reset --hard HEAD" clears the mess from the
169           index file and the working tree.
170           3. Merge a topic branch into the current branch, which resulted in
171           a fast-forward.
172           4. But you decided that the topic branch is not ready for public
173           consumption yet. "pull" or "merge" always leaves the original tip
174           of the current branch in ORIG_HEAD, so resetting hard to it brings
175           your index file and the working tree back to that state, and resets
176           the tip of the branch to that commit.
177
178       Undo a merge or pull inside a dirty working tree
179
180               $ git pull                         (1)
181               Auto-merging nitfol
182               Merge made by recursive.
183                nitfol                |   20 +++++----
184                ...
185               $ git reset --merge ORIG_HEAD      (2)
186
187           1. Even if you may have local modifications in your working tree,
188           you can safely say "git pull" when you know that the change in the
189           other branch does not overlap with them.
190           2. After inspecting the result of the merge, you may find that the
191           change in the other branch is unsatisfactory. Running "git reset
192           --hard ORIG_HEAD" will let you go back to where you were, but it
193           will discard your local changes, which you do not want. "git reset
194           --merge" keeps your local changes.
195
196       Interrupted workflow
197           Suppose you are interrupted by an urgent fix request while you are
198           in the middle of a large change. The files in your working tree are
199           not in any shape to be committed yet, but you need to get to the
200           other branch for a quick bugfix.
201
202               $ git checkout feature ;# you were working in "feature" branch and
203               $ work work work       ;# got interrupted
204               $ git commit -a -m "snapshot WIP"                 (1)
205               $ git checkout master
206               $ fix fix fix
207               $ git commit ;# commit with real log
208               $ git checkout feature
209               $ git reset --soft HEAD^ ;# go back to WIP state  (2)
210               $ git reset                                       (3)
211
212           1. This commit will get blown away so a throw-away log message is
213           OK.
214           2. This removes the WIP commit from the commit history, and sets
215           your working tree to the state just before you made that snapshot.
216           3. At this point the index file still has all the WIP changes you
217           committed as snapshot WIP. This updates the index to show your WIP
218           files as uncommitted.
219
220           See also git-stash(1).
221
222       Reset a single file in the index
223           Suppose you have added a file to your index, but later decide you
224           do not want to add it to your commit. You can remove the file from
225           the index while keeping your changes with git reset.
226
227               $ git reset -- frotz.c                      (1)
228               $ git commit -m "Commit files in index"     (2)
229               $ git add frotz.c                           (3)
230
231           1. This removes the file from the index while keeping it in the
232           working directory.
233           2. This commits all other changes in the index.
234           3. Adds the file to the index again.
235
236       Keep changes in working tree while discarding some previous commits
237           Suppose you are working on something and you commit it, and then
238           you continue working a bit more, but now you think that what you
239           have in your working tree should be in another branch that has
240           nothing to do with what you committed previously. You can start a
241           new branch and reset it while keeping the changes in your working
242           tree.
243
244               $ git tag start
245               $ git checkout -b branch1
246               $ edit
247               $ git commit ...                            (1)
248               $ edit
249               $ git checkout -b branch2                   (2)
250               $ git reset --keep start                    (3)
251
252           1. This commits your first edits in branch1.
253           2. In the ideal world, you could have realized that the earlier
254           commit did not belong to the new topic when you created and
255           switched to branch2 (i.e. "git checkout -b branch2 start"), but
256           nobody is perfect.
257           3. But you can use "reset --keep" to remove the unwanted commit
258           after you switched to "branch2".
259

DISCUSSION

261       The tables below show what happens when running:
262
263           git reset --option target
264
265
266       to reset the HEAD to another commit (target) with the different reset
267       options depending on the state of the files.
268
269       In these tables, A, B, C and D are some different states of a file. For
270       example, the first line of the first table means that if a file is in
271       state A in the working tree, in state B in the index, in state C in
272       HEAD and in state D in the target, then "git reset --soft target" will
273       leave the file in the working tree in state A and in the index in state
274       B. It resets (i.e. moves) the HEAD (i.e. the tip of the current branch,
275       if you are on one) to "target" (which has the file in state D).
276
277           working index HEAD target         working index HEAD
278           ----------------------------------------------------
279            A       B     C    D     --soft   A       B     D
280                                     --mixed  A       D     D
281                                     --hard   D       D     D
282                                     --merge (disallowed)
283                                     --keep  (disallowed)
284
285           working index HEAD target         working index HEAD
286           ----------------------------------------------------
287            A       B     C    C     --soft   A       B     C
288                                     --mixed  A       C     C
289                                     --hard   C       C     C
290                                     --merge (disallowed)
291                                     --keep   A       C     C
292
293           working index HEAD target         working index HEAD
294           ----------------------------------------------------
295            B       B     C    D     --soft   B       B     D
296                                     --mixed  B       D     D
297                                     --hard   D       D     D
298                                     --merge  D       D     D
299                                     --keep  (disallowed)
300
301           working index HEAD target         working index HEAD
302           ----------------------------------------------------
303            B       B     C    C     --soft   B       B     C
304                                     --mixed  B       C     C
305                                     --hard   C       C     C
306                                     --merge  C       C     C
307                                     --keep   B       C     C
308
309           working index HEAD target         working index HEAD
310           ----------------------------------------------------
311            B       C     C    D     --soft   B       C     D
312                                     --mixed  B       D     D
313                                     --hard   D       D     D
314                                     --merge (disallowed)
315                                     --keep  (disallowed)
316
317           working index HEAD target         working index HEAD
318           ----------------------------------------------------
319            B       C     C    C     --soft   B       C     C
320                                     --mixed  B       C     C
321                                     --hard   C       C     C
322                                     --merge  B       C     C
323                                     --keep   B       C     C
324
325       "reset --merge" is meant to be used when resetting out of a conflicted
326       merge. Any mergy operation guarantees that the working tree file that
327       is involved in the merge does not have local change wrt the index
328       before it starts, and that it writes the result out to the working
329       tree. So if we see some difference between the index and the target and
330       also between the index and the working tree, then it means that we are
331       not resetting out from a state that a mergy operation left after
332       failing with a conflict. That is why we disallow --merge option in this
333       case.
334
335       "reset --keep" is meant to be used when removing some of the last
336       commits in the current branch while keeping changes in the working
337       tree. If there could be conflicts between the changes in the commit we
338       want to remove and the changes in the working tree we want to keep, the
339       reset is disallowed. That’s why it is disallowed if there are both
340       changes between the working tree and HEAD, and between HEAD and the
341       target. To be safe, it is also disallowed when there are unmerged
342       entries.
343
344       The following tables show what happens when there are unmerged entries:
345
346           working index HEAD target         working index HEAD
347           ----------------------------------------------------
348            X       U     A    B     --soft  (disallowed)
349                                     --mixed  X       B     B
350                                     --hard   B       B     B
351                                     --merge  B       B     B
352                                     --keep  (disallowed)
353
354           working index HEAD target         working index HEAD
355           ----------------------------------------------------
356            X       U     A    A     --soft  (disallowed)
357                                     --mixed  X       A     A
358                                     --hard   A       A     A
359                                     --merge  A       A     A
360                                     --keep  (disallowed)
361
362       X means any state and U means an unmerged index.
363

GIT

365       Part of the git(1) suite
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369Git 1.8.3.1                       11/19/2018                      GIT-RESET(1)
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