Describe how to install with testenvironment

install.md

@@ -26,6 +26,19 @@ curl -fsSL https://gitea.dtext.online/obel1x/fedora-OEMDRV/raw/branch/main/syste
 sudo bash /tmp/install.sh
 ```
 
+## Run directly from another repository
+
+If you are on another fork or branch and you want to test your changes, do:
+
+```bash
+export REPO_URL="https://yourgitserver.tld/.../fedora-OEMDRV.git"
+export REPO_BRANCH="anotherbranch"
+curl -fsSL ${REPO_URL%.git}/raw/branch/${REPO_BRANCH}/system_setup/install.sh -o /tmp/install.sh
+sudo -E bash /tmp/install.sh
+```
+
+That way, install.sh should know what to pull.
+
 ## After the script completes
 
 Configure your environment before running any installation: