Index: head/lang/go/Makefile
===================================================================
--- head/lang/go/Makefile
+++ head/lang/go/Makefile
@@ -3,6 +3,7 @@
 
 PORTNAME=	go
 PORTVERSION=	1.14.1
+PORTREVISION=	1
 PORTEPOCH=	1
 CATEGORIES=	lang
 MASTER_SITES=	https://golang.org/dl/ \
Index: head/lang/go/files/patch-src_cmd_go_internal_modload_init.go
===================================================================
--- head/lang/go/files/patch-src_cmd_go_internal_modload_init.go
+++ head/lang/go/files/patch-src_cmd_go_internal_modload_init.go
@@ -0,0 +1,12 @@
+Upstream PR: https://github.com/golang/go/issues/37948
+--- src/cmd/go/internal/modload/init.go.orig	2020-02-25 18:32:50 UTC
++++ src/cmd/go/internal/modload/init.go
+@@ -562,7 +562,7 @@ func checkVendorConsistency() {
+ 	readVendorList()
+ 
+ 	pre114 := false
+-	if modFile.Go == nil || semver.Compare("v"+modFile.Go.Version, "v1.14") < 0 {
++	if modFile.Go == nil || semver.Compare("v"+modFile.Go.Version, "v1.14") < 0 || (os.Getenv("GO_NO_VENDOR_CHECKS") == "1" && len(vendorMeta) == 0) {
+ 		// Go versions before 1.14 did not include enough information in
+ 		// vendor/modules.txt to check for consistency.
+ 		// If we know that we're on an earlier version, relax the consistency check.