Add getting an older version of a file

diff --git a/README.md b/README.md
index 81c0cb1..f23a068 100644 (file)
--- a/README.md
+++ b/README.md
@@ -63,3 +63,11 @@ do
     git push $REMOTE_NAME :refs/tags/$tag
 done
 ```
+
+
+Get an older version of a file
+------------------------------
+
+```sh
+git cat-file -p $COMMIT_DIGEST:$FILE_PATH
+```