diff --git a/hack/generate-authors.sh b/hack/generate-authors.sh
index 5133ed5b02..da30edb5fb 100755
--- a/hack/generate-authors.sh
+++ b/hack/generate-authors.sh
@@ -3,7 +3,7 @@
 set -e
 
 SCRIPTDIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
-ROOTDIR="$(git -C "$SCRIPTDIR" rev-parse --show-toplevel)"
+ROOTDIR="$(cd "${SCRIPTDIR}/.." && pwd)"
 
 set -x
 
diff --git a/hack/validate/no-module b/hack/validate/no-module
index 67a9c559ad..917cc3e756 100755
--- a/hack/validate/no-module
+++ b/hack/validate/no-module
@@ -3,7 +3,7 @@
 # Check that no one is trying to commit a go.mod.
 
 SCRIPTDIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
-ROOTDIR="$(git -C "$SCRIPTDIR" rev-parse --show-toplevel)"
+ROOTDIR="$(cd "${SCRIPTDIR}/../.." && pwd)"
 
 if test -e "${ROOTDIR}/go.mod"; then
 	{
diff --git a/hack/with-go-mod.sh b/hack/with-go-mod.sh
index 3be44d11ec..7c2448ae24 100755
--- a/hack/with-go-mod.sh
+++ b/hack/with-go-mod.sh
@@ -9,7 +9,7 @@
 set -e
 
 SCRIPTDIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
-ROOTDIR="$(git -C "$SCRIPTDIR" rev-parse --show-toplevel)"
+ROOTDIR="$(cd "${SCRIPTDIR}/.." && pwd)"
 
 if test -e "${ROOTDIR}/go.mod"; then
 	{