diff --git a/docs/koji/bootstrapping.md b/docs/koji/bootstrapping.md
index f8fd6b9b7c4a03072d38523c8f50cb6aaa4ab185..9fb351501d9231e7f3c0c55721b295c37259a2ee 100644
--- a/docs/koji/bootstrapping.md
+++ b/docs/koji/bootstrapping.md
@@ -262,6 +262,28 @@ Don't forget to commit the files you've created so far:
 [aiadm10] ~/lxdist-build/bin/tags (master) > git push origin master
 ```
 
+## Create tag for EPEL
+
+User tags get the EPEL repo via inheritance, so we need to create the external
+repo and the tag that exposes it. This is done via inheritance (and not by simply
+adding the external repo to the tag) because we want to make sure the base repos
+have higher priority than EPEL. In Koji, external repos added to a tag have higher
+priority than inherited ones, regardless of the actual priority you set.
+
+```bash
+[aiadm10] ~ > koji add-external-repo epel8s 'http://linuxsoft.cern.ch/epel/8/Everything/$arch/'
+Created external repo 417
+[aiadm10] ~/lxdist-build/bin/tags (master) > cat epel8s.sh
+#!/bin/bash
+
+DIST="epel8s"
+
+koji add-tag $DIST
+koji add-external-repo --tag=$DIST epel8s -p 60 --mode=bare
+
+[aiadm10] ~/lxdist-build/bin/tags (master) > ./epel8s.sh
+Added external repo epel8s to tag epel8s (priority 60)
+```
 
 ## Add new distro to rpmci