git reset Rewrite commit

Tutorial 3 overwrites the submission. 3. Reset

To save time, this tutorial uses the existing history as a local database.

Download from here

We will use reset to remove the first two commits from the Master branch.

First enter the Stepup-tutorial/tutorial3 directory. The status of the local side history is shown in the following figure.

Confirm the history with the log command.

$ git log
commit 0d4a808c26908cd5fe4b6294a00150342d1a58be
author:yourname <yourname@yourmail.com>
Date:   Mon Jul 23:19:26 +0900 Add pull

    instructions

commit 9a54fd4dd22dbe22dd966581bc78e83f16cee1d7
author:yourname <yourname@yourmail.com>
Date:   Mon Jul 23:19:01 +0900

    Add a description of the commit

commit 326fc9f70d022afdd31b0072dbbae003783d77ed
author:yourname <yourname@yourmail.com>
Date:   Mon Jul 23:17:56 +0900

    Add the instructions for adding add

commit 48eec1ddf73a7fb508ef664efd6b3d873631742f
author:yourname <yourname@yourmail.com>
Date:   Mon Jul 23:16:14 +0900 First

    Commit

Open the Sample.txt file to confirm the content.

Even a monkey knows. git command
add changes input to the index status of the
commit record index to
get the contents of the remote database

Delete the submission with reset.

$ git reset--hard head~~
HEAD is now at 326fc9f add description

Open the Sample.txt and see if "Add a Commit" and "add pull" are gone. or use the log command to confirm the history.

$ git log
commit 326fc9f70d022afdd31b0072dbbae003783d77ed
author:yourname <yourname@yourmail.com>
Date:   Mon Jul 23:17:56 +0900

    Add the instructions for adding add

commit 48eec1ddf73a7fb508ef664efd6b3d873631742f
author:yourname <yourname@yourmail.com>
Date:   Mon Jul 23:16:14 +0900 First

    Commit
                        

Submissions prior to reset can be referenced by Orig_head. When reset is wrong, reset on Orig_head can be restored to the state before reset.

$ git reset--hard orig_head
HEAD is now at 0d4a808 Add pull description

From:http://backlogtool.com/git-guide/cn/stepup/stepup7_3.html