I didn\'t want to lose some information after a git pull, so I did a git fetch before. Where can I read the new modifications after a git fet
Try
git log --oneline --decorate origin/master
This will give you the change log from the master head of the origin remote (you can substitute any other remote branch as needed). You'll get an output somewhat like this:
234121 (origin/master) Commit message 5
872373 Commit message 4
623748 Commit message 3
235090 (master) Commit message 2
192399 Commit message 1
The commit marked (master) is the head of your local master branch. The commit marked (origin/master) is the head of the remote's master branch.