Issue #3005: add to readme: recommend cloning wth --depth 1.

diff --git a/readme_template.md b/readme_template.md
index 3141d92c8d8e81c262eb68e9351847c38de4f600..2d2ad852a5bc482d975bce189094cbfee49df7d5 100644 (file)
--- a/readme_template.md
+++ b/readme_template.md
@@ -1,6 +1,11 @@
-**Take Note!**
+> [!IMPORTANT]
+> **Cloning this repository can take a long time!**
+> You probably just want to start with the latest version, not its whole history since 2018.
+> **Therefore** you probably want to use `git clone --depth 1 ...` to save significant time.
 
-With the exception of issues and PRs regarding changes to
+
+> [!NOTE]
+> With the exception of issues and PRs regarding changes to
 `hosts/data/StevenBlack/hosts`, all other issues regarding the content of the
 produced hosts files should be made with the appropriate data source that
 contributed the content in question. The contact information for all of the data