git sparse download include /1 (#34268)

Author: Rick-Anderson

aspnetcore/includes/git-download.md

@@ -0,0 +1,11 @@
+> [!TIP]
+> Use [`git sparse-checkout`](https://git-scm.com/docs/git-sparse-checkout) to only download the sample subfolder and the last commit. For example:
+```
+git clone --depth 1 --filter=blob:none https://github.com/dotnet/AspNetCore.Docs.git --sparse
+cd AspNetCore.Docs
+git sparse-checkout init --cone
+git sparse-checkout set aspnetcore/security/authorization/secure-data/samples
+```
+
+In the preceding example, the `git sparse-checkout set` command specifies the path to the subfolder that you want to download. Replace 
+`aspnetcore/security/authorization/secure-data/samples` with the path to the subfolder that you want to download.