git工作区回滚

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使用 git 团队协作管理项目的时候，难免会有错误的提交，按照正常的流程应该是在后续的提交纠正这些错误，但是如果这些错误本就不必要的话，是可以用回滚来操作的，于此记录下 git 下回滚的姿势。

如果说，本次提交仅限本地的话，我们可以用 git reset --hard [your reset version] 来回退本地的版本，从而实现取消错误代码。如：

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$ laravel git:(master) git ll
commit ee3105a (HEAD -> master)
Author: caixian <qq52577517@163.com>
Date:   Wed Dec 4 09:34:17 2019 +0800

    some stupid do this

 app/Http/Controllers/User.php | 1 +
 1 file changed, 1 insertion(+)

commit c92f163 (origin/master)
Author: caixian <qq52577517@163.com>
Date:   Sat Nov 9 14:55:46 2019 +0800

    clear cors
:q
$ laravel git:(master) git reset --hard c92f163
HEAD is now at c92f163 clear cors

如上，由于我们还未推送至远程，所以我们接下来的 commit, push 等一系列的行为都是正常的。

如果说，某人不慎把错误代码提交且推送到看远程的话，这个时候就小心了，正常情况下，尽量走正常路线解决错误代码 (既在当前版本下找到错误代码且更正然后提交到远程) ，正式环境下的代码可以用 git reset --hard [version] 暂时回退到正常版本。如果涉及到的代码量不大的话，我们可以用到 git revert [version] 来撤销更改。如：

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$ laravel git:(master) git ll
commit 9a258dc (HEAD -> master, origin/master)
Author: caixian <qq52577517@163.com>
Date:   Wed Dec 4 09:46:29 2019 +0800

    some stupid do this

 app/Http/Controllers/User.php | 1 +
 1 file changed, 1 insertion(+)

commit c92f163
Author: caixian <qq52577517@163.com>
Date:   Sat Nov 9 14:55:46 2019 +0800

    clear cors
:q

$ laravel git:(master) git revert 9a258dc
Revert "clear cors"

This reverts commit 9a258dc95d0c8c5b75c9e33c1513479be2f07e53.

# Please enter the commit message for your changes. Lines starting
# with '#' will be ignored, and an empty message aborts the commit.
#
# On branch master
# Changes to be committed:
#       modified:   app/Http/Controllers/User.php
#
~
~
~
:wq

[master fda0be6] Revert "some stupid do this"
 1 file changed, 7 insertions(+), 6 deletions(-)

$ laravel git:(master) git push origin master
Enumerating objects: 7, done.
Counting objects: 100% (7/7), done.
Delta compression using up to 4 threads
Compressing objects: 100% (4/4), done.
Writing objects: 100% (4/4), 437 bytes | 437.00 KiB/s, done.
Total 4 (delta 3), reused 0 (delta 0)
remote: Resolving deltas: 100% (3/3), completed with 3 local objects.
remote:
remote: GitHub found 2 vulnerabilities on ElegantLive/learn-laravel's default branch (2 moderate). To find out more, visit:
remote:      https://github.com/ElegantLive/learn-laravel/network/alerts
remote:
To github.com:ElegantLive/learn-laravel.git
   9a258dc..fda0be6  master -> master
$ laravel git:(master) git ll
commit fda0be6 (HEAD -> master, origin/master)
Author: caixian <qq52577517@163.com>
Date:   Wed Dec 4 09:49:54 2019 +0800

    Revert "some stupid do this"

    This reverts commit dbdc6db09ffa9bd5af461fc91f04261566bb017c.

app/Http/Controllers/User.php | 1 -
 1 file changed, 1 deletion(-)

commit 9a258dc
Author: caixian <qq52577517@163.com>
Date:   Wed Dec 4 09:46:29 2019 +0800

    some stupid do this

 app/Http/Controllers/User.php | 1 +
 1 file changed, 1 insertion(+)

commit c92f163
Author: caixian <qq52577517@163.com>
Date:   Sat Nov 9 14:55:46 2019 +0800

    clear cors
:q

由上可以看到，我们成功撤销了some stupid do this 的更改，且成功推送到了远程，这样我们就可以基于上个版本(clear cors)继续开发。

注意： git revert [version] 是撤销某个提交的更改，不是回退到某个版本

当然，如果说，有多个错误提交形成一错再错的连环作用的话，建议基于稳定版本重新开一个分支

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git checkout -b [new branch name] // 切换至新分支
git reset --hard [version] // 回退至稳定版本
git push -f origin [new branch name] // 强制推送到远程（当然你也可以基于当前分支回退稳定版本，然后强行推送至远程）

祝你好运

enjoy and happy coding!