##### Remove history of all but select files in cloned repo
```sh
-$ cp -Rp old new
+$ git clone old new
$ cd new
$ git clean -dfx
$ git gc --aggressive --prune=now
git rebase --onto $TEMP_BRANCH --root $MAIN_BRANCH
git branch -d $TEMP_BRANCH
```
+
+
+Deleting all tags, locally and remotely
+---------------------------------------
+```sh
+for tag in `git tag`;
+do
+ git tag -d $tag
+ git push $REMOTE_NAME :refs/tags/$tag
+done
+```
+
+
+Get an older version of a file
+------------------------------
+
+```sh
+git cat-file -p $COMMIT_DIGEST:$FILE_PATH
+```