Git 数据恢复学习

Question

数据恢复

➜  git_learn git:(master) git log --pretty=oneline
// 输出
135b8db5bedabdb8cc4f50c08e015d6d72028357 (HEAD -> master, origin/master, origin/HEAD) add demo.js
dfc4c86977fb723978063e4f2b0410463ca8f808 git diff test
42075fa0b98e9898a07907cf86cf7de547834afd add & commit
a92be194330b6dc22adc3482961664243afd171d test2
59c78ddf6402908e9be8e54bd889ac2676eea856 test1
d7443e6ed235d7fd7251c03649b496cdf70f6d25 merge test
6a1662e201007cf89b45dcbc79933e714d542fc5 Initial commitv

现在我们 reset 到下面这个 commit：

a92be194330b6dc22adc3482961664243afd171d test2

➜  git_learn git:(master) git reset --hard a92be194330
HEAD is now at a92be19 test2

➜  git_learn git:(master) git log --pretty=oneline
// 输出
a92be194330b6dc22adc3482961664243afd171d (HEAD -> master) test2
59c78ddf6402908e9be8e54bd889ac2676eea856 test1
d7443e6ed235d7fd7251c03649b496cdf70f6d25 merge test
6a1662e201007cf89b45dcbc79933e714d542fc5 Initial commit

➜  git_learn git:(master) git reflog
// 输出
a92be19 (HEAD -> master) HEAD@{0}: reset: moving to a92be194330
135b8db (origin/master, origin/HEAD) HEAD@{1}: reset: moving to 135b8db5b
bdc2d7d HEAD@{2}: pull: Merge made by the 'recursive' strategy.
0315228 HEAD@{3}: reset: moving to 03152280ad8
a92be19 (HEAD -> master)

git log -g

git log -g 会输出 reflog 的正常日志，从而显示更多有用信息：

➜  git_learn git:(master) git reset --hard 135b8db5bedabdb8cc4
HEAD is now at 135b8db add demo.js

再次使用 git log --pretty=oneline 查看，发现数据恢复了：

➜  git_learn git:(master) git log --pretty=oneline
// 输出
135b8db5bedabdb8cc4f50c08e015d6d72028357 (HEAD -> master, origin/master, origin/HEAD) add demo.js
dfc4c86977fb723978063e4f2b0410463ca8f808 git diff test
42075fa0b98e9898a07907cf86cf7de547834afd add & commit
a92be194330b6dc22adc3482961664243afd171d test2
59c78ddf6402908e9be8e54bd889ac2676eea856 test1
d7443e6ed235d7fd7251c03649b496cdf70f6d25 merge test
6a1662e201007cf89b45dcbc79933e714d542fc5 Initial commit