diff --git a/build-and-update-all-branches b/build-and-update-all-branches
new file mode 100755
index 0000000..53768c2
--- /dev/null
+++ b/build-and-update-all-branches
@@ -0,0 +1,39 @@
+#! /bin/sh
+
+# Prepare main branch, review the list of branches below and then execute this
+# script.
+
+branches='main epel7 epel8 epel9 f35 f36'
+
+exit_handler ()
+{
+    git checkout main
+}
+
+trap exit_handler EXIT
+
+set -e
+set -x
+
+koji hello
+
+tasks=
+for branch in $branches; do
+    if test $branch != main; then
+        git checkout "$branch"
+        git merge main
+    fi
+    git push
+    skip_nvr_check=
+    if test $branch = epel7; then
+        skip_nvr_check=--skip-nvr-check
+    fi
+    tasks="${tasks}`fedpkg build $skip_nvr_check --nowait | grep 'Created task' | cut -d: -f2`"
+done
+
+if test -n "$tasks"; then
+    koji watch-task $tasks
+fi
+
+git checkout main
+fedpkg update