We can put things back the way they were
by using git checkout:
$ git checkout HEAD mars.txt
$ cat mars.txt
Cold and dry, but everything is my favorite color
The two moons may be a problem for Wolfman
But the Mummy will appreciate the lack of humidity
As you might guess from its name,
git checkout checks out (i.e., restores) an old version of a file.
In this case,
we’re telling Git that we want to recover the version of the file recorded in HEAD,
which is the last saved commit.
If we want to go back even further,
we can use a commit identifier instead:
$ git checkout f22b25e mars.txt
$ cat mars.txt
Cold and dry, but everything is my favorite color
$ git status
On branch main
Changes to be committed:
(use "git reset HEAD <file..." to unstage)
modified: mars.txt
Notice that the changes are currently in the staging area.
Again, we can put things back the way they were
by using git checkout:
$ git checkout HEAD mars.txt