我克隆了我的倉庫，其中有一些文件夾和文件：!git clone https://{username}:{password}@github.com/{username}/{project}.git然后我更改當前目錄：%cd {project}刪除文件夾：!rm -rf "/content/{project}/sample_data"檢查狀態：!git statusOn branch masterYour branch is up to date with 'origin/master'.Changes not staged for commit:  (use "git add/rm <file>..." to update what will be committed)  (use "git checkout -- <file>..." to discard changes in working directory)    deleted:    sample_data/README.md    deleted:    sample_data/anscombe.json    deleted:    sample_data/california_housing_test.csv    deleted:    sample_data/california_housing_train.csv    deleted:    sample_data/mnist_test.csv    deleted:    sample_data/mnist_train_small.csvno changes added to commit (use "git add" and/or "git commit -a")做承諾：!git commit -m "Removed all"On branch masterYour branch is up to date with 'origin/master'.Changes not staged for commit:    deleted:    sample_data/README.md    deleted:    sample_data/anscombe.json    deleted:    sample_data/california_housing_test.csv    deleted:    sample_data/california_housing_train.csv    deleted:    sample_data/mnist_test.csv    deleted:    sample_data/mnist_train_small.csvno changes added to commit并推動：!git push origin master之后，我的文件夾sample_data仍在我的倉庫中。我究竟做錯了什么？