git - 如何撤消git reset --hard HEAD?1？(How can I undo git reset --hard HEAD~1?)

Question

Is it possible to undo the changes caused by the following command?

(是否可以撤消以下命令引起的更改？)

If so, how?

(如果是这样，怎么办？)

git reset --hard HEAD~1

  ask by Paul Wicks translate from so

Answer 1

Pat Notz is correct.

(Pat Notz是正确的。)

You can get the commit back so long as it's been within a few days.

(只要几天之内就可以收回承诺。)

git only garbage collects after about a month or so unless you explicitly tell it to remove newer blobs.

(git仅在大约一个月后收集垃圾，除非您明确告诉它删除较新的blob。)

$ git init
Initialized empty Git repository in .git/

$ echo "testing reset" > file1
$ git add file1
$ git commit -m 'added file1'
Created initial commit 1a75c1d: added file1
 1 files changed, 1 insertions(+), 0 deletions(-)
 create mode 100644 file1

$ echo "added new file" > file2
$ git add file2
$ git commit -m 'added file2'
Created commit f6e5064: added file2
 1 files changed, 1 insertions(+), 0 deletions(-)
 create mode 100644 file2

$ git reset --hard HEAD^
HEAD is now at 1a75c1d... added file1

$ cat file2
cat: file2: No such file or directory

$ git reflog
1a75c1d... HEAD@{0}: reset --hard HEAD^: updating HEAD
f6e5064... HEAD@{1}: commit: added file2

$ git reset --hard f6e5064
HEAD is now at f6e5064... added file2

$ cat file2
added new file

You can see in the example that the file2 was removed as a result of the hard reset, but was put back in place when I reset via the reflog.

(您可以在示例中看到，由于硬重置而删除了file2，但是当我通过reflog重置时，file2又被放回原位。)