diff --git a/go.mod b/go.mod
index 007ad7c77e..e44855dd95 100644
--- a/go.mod
+++ b/go.mod
@@ -14,7 +14,7 @@ require (
 	google.golang.org/grpc v1.56.3
 	gopkg.in/go-playground/webhooks.v3 v3.13.0
 	gopkg.in/yaml.v2 v2.3.0
-	knative.dev/hack v0.0.0-20240814130635-06f7aff93954
+	knative.dev/hack v0.0.0-20240904112633-9724320e463f
 )
 
 require (
diff --git a/go.sum b/go.sum
index 27a2e985bc..7d3ec9ec74 100644
--- a/go.sum
+++ b/go.sum
@@ -241,5 +241,5 @@ honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWh
 honnef.co/go/tools v0.0.1-2019.2.3/go.mod h1:a3bituU0lyd329TUQxRnasdCoJDkEUEAqEt0JzvZhAg=
 honnef.co/go/tools v0.0.1-2020.1.5 h1:nI5egYTGJakVyOryqLs1cQO5dO0ksin5XXs2pspk75k=
 honnef.co/go/tools v0.0.1-2020.1.5/go.mod h1:X/FiERA/W4tHapMX5mGpAtMSVEeEUOyHaw9vFzvIQ3k=
-knative.dev/hack v0.0.0-20240814130635-06f7aff93954 h1:dGMK5VoL75szvrYQTL9NqhPYHu1f5dGaXx1hJI8fAFM=
-knative.dev/hack v0.0.0-20240814130635-06f7aff93954/go.mod h1:R0ritgYtjLDO9527h5vb5X6gfvt5LCrJ55BNbVDsWiY=
+knative.dev/hack v0.0.0-20240904112633-9724320e463f h1:UQcD5RVBSEitzbNRQOfoJHJ1Rs29hiii7bzhUvU8s8A=
+knative.dev/hack v0.0.0-20240904112633-9724320e463f/go.mod h1:R0ritgYtjLDO9527h5vb5X6gfvt5LCrJ55BNbVDsWiY=
diff --git a/vendor/knative.dev/hack/codegen-library.sh b/vendor/knative.dev/hack/codegen-library.sh
index 01a43132dc..42ece681ce 100644
--- a/vendor/knative.dev/hack/codegen-library.sh
+++ b/vendor/knative.dev/hack/codegen-library.sh
@@ -133,16 +133,18 @@ function restore-changes-if-its-copyright-year-only() {
   local difflist
   log "Cleaning up generated code"
   difflist="$(mktemp)"
-  git diff --exit-code --name-only > "$difflist"
-  # list git changes and skip those which differ only in the boilerplate year
-  while read -r file; do
-    # check if the file contains just the change in the boilerplate year
-    if [ "$(LANG=C git diff --exit-code --shortstat -- "$file")" = ' 1 file changed, 1 insertion(+), 1 deletion(-)' ] && \
-        [[ "$(git diff --exit-code -U1 -- "$file" | grep -Ec '^[+-]\s*[*#]?\s*Copyright 2[0-9]{3}')" -eq 2 ]]; then
-      # restore changes to that file
-      git checkout -- "$file"
-    fi
-  done < "$difflist"
+  if ! git diff --exit-code --name-only > /dev/null; then
+    # list git changes and skip those which differ only in the boilerplate year
+    git diff --name-only > "$difflist"  
+    while read -r file; do
+      # check if the file contains just the change in the boilerplate year
+      if [ "$(LANG=C git diff --exit-code --shortstat -- "$file")" = ' 1 file changed, 1 insertion(+), 1 deletion(-)' ] && \
+          [[ "$(git diff --exit-code -U1 -- "$file" | grep -Ec '^[+-]\s*[*#]?\s*Copyright 2[0-9]{3}')" -eq 2 ]]; then
+        # restore changes to that file
+        git checkout -- "$file"
+      fi
+    done < "$difflist"
+  fi
   rm -f "$difflist"
 }
 
diff --git a/vendor/knative.dev/hack/library.sh b/vendor/knative.dev/hack/library.sh
index 08f2dba16f..d487a14957 100644
--- a/vendor/knative.dev/hack/library.sh
+++ b/vendor/knative.dev/hack/library.sh
@@ -774,7 +774,7 @@ function go_update_deps() {
 function __clean_goworksum_if_exists() {
   if [ -f "$REPO_ROOT_DIR/go.work.sum" ]; then
     log.step 'Cleaning the go.work.sum file'
-    truncate --size 0 "$REPO_ROOT_DIR/go.work.sum"
+    truncate -s 0 "$REPO_ROOT_DIR/go.work.sum"
   fi
 }
 
diff --git a/vendor/modules.txt b/vendor/modules.txt
index c6adbe2311..2672445a74 100644
--- a/vendor/modules.txt
+++ b/vendor/modules.txt
@@ -318,7 +318,7 @@ gopkg.in/go-playground/webhooks.v3/github
 gopkg.in/yaml.v2
 # honnef.co/go/tools v0.0.1-2020.1.5
 ## explicit; go 1.11
-# knative.dev/hack v0.0.0-20240814130635-06f7aff93954
+# knative.dev/hack v0.0.0-20240904112633-9724320e463f
 ## explicit; go 1.21
 knative.dev/hack
 # go.opencensus.io => go.opencensus.io v0.20.2