Git hard reset cleaning resetting and reverting everything

The following will remove all builds artefacts, work in progress, getting you back to a clean state.

Replace the part in bold by your branch.

git fetch origin
git reset --hard origin/master
git clean -f -d

If you have submodules

git clean -xfd
git submodule foreach --recursive git clean -xfd
git reset --hard origin/master
git submodule foreach --recursive git reset --hard 

Alternate way :

Remove all directories but the .git folder, then do :

$> cd my-repo
$> rm -fr * # from the git root directory this will not remove the .git folder
$> git checkout -- *