diff --git a/etc/README.md b/etc/README.md
index c423eb8..a5757da 100644
--- a/etc/README.md
+++ b/etc/README.md
@@ -234,6 +234,11 @@ Rebuild entire build groups including or excluding group dependencies, respectiv
 ./build.sh [ ... ] -r ALL =native_runtime
 ```
   
+Forcibly (re)download all archive files and/or Git repositories associated with all packages:
+```shell
+./build.sh [ ... ] -r ALL:@fetch
+```
+  
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 [//]: # "}}}"