feat: configure git reset-branch alias

Author: ferrarimarco

.gitconfig

@@ -85,6 +85,9 @@ undo = !git reset HEAD~1 --mixed
 undo-amended = !git reset --soft HEAD@{1}
 top = !git log --format=format:%an | sort | uniq -c | sort -r | head -n 20
 
+# Fetches all the remotes and resets the current local branch to its upstream
+reset-branch = !git fetch --all && git reset --hard @{u}
+
 # from trevor bramble https://twitter.com/TrevorBramble/status/774292970681937920
 alias=!git config -l | grep ^alias | cut -c 7- | sort