Index: go.env
--- go.env.orig
+++ go.env
@@ -7,6 +7,6 @@
 GOPROXY=https://proxy.golang.org,direct
 GOSUMDB=sum.golang.org
 
-# Automatically download newer toolchains as directed by go.mod files.
+# Only use the bundled toolchain, rather than downloading newer toolchains as directed by go.mod files.
 # See https://go.dev/doc/toolchain for details.
-GOTOOLCHAIN=auto
+GOTOOLCHAIN=local
