Modifying the History - Git Recipes - page 267

Figure 8-1 . Removing two most recent revisions
Solution
Create a new repository containing revisions a , b , c , and d :
$ cd git-recipes
$ git init 08-02
$ cd 08-02
$ git simple-commit a b c d
Your repository now contains four revisions. All of them are included in the mas-
ter branch. To remove the two most recent revisions use the command $ git re-
set --hard HEAD ∼ 2 . Now the $ git log --oneline command returns only
two revisions: a and b. Revisions c and d are removed from the history.
Hint You can use this recipe to remove any number of most recent commits. The
command $ git reset --hard HEAD ∼ 13 will remove the last 13 commits.
How It Works
The reference HEAD ∼ 2 points to the revision b in Figure 8-1 . You can also use the
SHA-1 of the revision b to achieve the same result. Assuming that the name of revision
b is a1b2c3d4 the following commands are equivalent: