diff --git a/sdk_container/src/third_party/coreos-overlay/.github/workflows/cacerts-apply-patch.sh b/sdk_container/src/third_party/coreos-overlay/.github/workflows/cacerts-apply-patch.sh
index 19515ff5dd..d74de66f6c 100755
--- a/sdk_container/src/third_party/coreos-overlay/.github/workflows/cacerts-apply-patch.sh
+++ b/sdk_container/src/third_party/coreos-overlay/.github/workflows/cacerts-apply-patch.sh
@@ -3,13 +3,12 @@
 set -euo pipefail
 
 UPDATE_NEEDED=1
-CHECKOUT_SCRIPTS="${CHECKOUT_SCRIPTS:-true}"
 
 . .github/workflows/common.sh
 
 prepare_git_repo
 
-if ! checkout_branches "${VERSION_NEW}-${TARGET}" "${CHECKOUT_SCRIPTS}"; then
+if ! checkout_branches "${VERSION_NEW}-${TARGET}"; then
   UPDATE_NEEDED=0
   exit 0
 fi
diff --git a/sdk_container/src/third_party/coreos-overlay/.github/workflows/cacerts-releases-lts-2021.yml b/sdk_container/src/third_party/coreos-overlay/.github/workflows/cacerts-releases-lts-2021.yml
index 443d204cae..c64aea3750 100644
--- a/sdk_container/src/third_party/coreos-overlay/.github/workflows/cacerts-releases-lts-2021.yml
+++ b/sdk_container/src/third_party/coreos-overlay/.github/workflows/cacerts-releases-lts-2021.yml
@@ -30,7 +30,6 @@ jobs:
           BASE_BRANCH: ${{ steps.fetch-latest-release.outputs.BASE_BRANCH_MAINTENANCE }}
           PATH: ${{ steps.setup-flatcar-sdk.outputs.path }}
           VERSION_NEW: ${{ steps.fetch-latest-release.outputs.VERSION_MAINTENANCE }}
-          CHECKOUT_SCRIPTS: "false"
           PACKAGES_CONTAINER: ${{ steps.setup-flatcar-sdk.outputs.PACKAGES_CONTAINER }}
           SDK_NAME: ${{ steps.setup-flatcar-sdk.outputs.SDK_NAME }}
         run: .github/workflows/cacerts-apply-patch.sh
diff --git a/sdk_container/src/third_party/coreos-overlay/.github/workflows/common.sh b/sdk_container/src/third_party/coreos-overlay/.github/workflows/common.sh
index 363c650e3a..55126f9b9c 100644
--- a/sdk_container/src/third_party/coreos-overlay/.github/workflows/common.sh
+++ b/sdk_container/src/third_party/coreos-overlay/.github/workflows/common.sh
@@ -54,16 +54,12 @@ function prepare_git_repo() {
 # caller needs to set pass a parameter as a branch name to be created.
 function checkout_branches() {
   TARGET_BRANCH=$1
-  CHECKOUT_SCRIPTS=$2
 
   [[ -z "${TARGET_BRANCH}" ]] && echo "No target branch specified. exit." && return 1
 
-  # Check out the scripts repo only if CHECKOUT_SCRIPTS == true, due to
-  # a corner case of its LTS-2021 branch does not have run_sdk_container.
-  if [[ "${CHECKOUT_SCRIPTS}" = true ]]; then
-    git -C "${SDK_OUTER_TOPSCRIPTSDIR}" checkout -B "${BASE_BRANCH}" \
-      "origin/${BASE_BRANCH}"
-  fi
+  # Check out the scripts.
+  git -C "${SDK_OUTER_TOPSCRIPTSDIR}" checkout -B "${BASE_BRANCH}" \
+    "origin/${BASE_BRANCH}"
 
   # update submodules like portage-stable under the scripts directories
   git submodule update --init --recursive
diff --git a/sdk_container/src/third_party/coreos-overlay/.github/workflows/containerd-apply-patch.sh b/sdk_container/src/third_party/coreos-overlay/.github/workflows/containerd-apply-patch.sh
index fa4285b55d..eafdf2ac38 100755
--- a/sdk_container/src/third_party/coreos-overlay/.github/workflows/containerd-apply-patch.sh
+++ b/sdk_container/src/third_party/coreos-overlay/.github/workflows/containerd-apply-patch.sh
@@ -3,13 +3,12 @@
 set -euo pipefail
 
 UPDATE_NEEDED=1
-CHECKOUT_SCRIPTS="${CHECKOUT_SCRIPTS:-true}"
 
 . .github/workflows/common.sh
 
 prepare_git_repo
 
-if ! checkout_branches "${VERSION_NEW}-${TARGET}" "${CHECKOUT_SCRIPTS}"; then
+if ! checkout_branches "containerd-${VERSION_NEW}-${TARGET}"; then
   UPDATE_NEEDED=0
   exit 0
 fi
diff --git a/sdk_container/src/third_party/coreos-overlay/.github/workflows/docker-apply-patch.sh b/sdk_container/src/third_party/coreos-overlay/.github/workflows/docker-apply-patch.sh
index 75f89b6192..2e953f33f9 100755
--- a/sdk_container/src/third_party/coreos-overlay/.github/workflows/docker-apply-patch.sh
+++ b/sdk_container/src/third_party/coreos-overlay/.github/workflows/docker-apply-patch.sh
@@ -3,13 +3,12 @@
 set -euo pipefail
 
 UPDATE_NEEDED=1
-CHECKOUT_SCRIPTS="${CHECKOUT_SCRIPTS:-true}"
 
 . .github/workflows/common.sh
 
 prepare_git_repo
 
-if ! checkout_branches "docker-${VERSION_NEW}-${TARGET}" "${CHECKOUT_SCRIPTS}"; then
+if ! checkout_branches "docker-${VERSION_NEW}-${TARGET}"; then
   UPDATE_NEEDED=0
   exit 0
 fi
diff --git a/sdk_container/src/third_party/coreos-overlay/.github/workflows/firmware-apply-patch.sh b/sdk_container/src/third_party/coreos-overlay/.github/workflows/firmware-apply-patch.sh
index d8d8ea761b..430ceec9ba 100755
--- a/sdk_container/src/third_party/coreos-overlay/.github/workflows/firmware-apply-patch.sh
+++ b/sdk_container/src/third_party/coreos-overlay/.github/workflows/firmware-apply-patch.sh
@@ -3,13 +3,12 @@
 set -euo pipefail
 
 UPDATE_NEEDED=1
-CHECKOUT_SCRIPTS="${CHECKOUT_SCRIPTS:-true}"
 
 . .github/workflows/common.sh
 
 prepare_git_repo
 
-if ! checkout_branches "${VERSION_NEW}-${TARGET}" "${CHECKOUT_SCRIPTS}"; then
+if ! checkout_branches "${VERSION_NEW}-${TARGET}"; then
   UPDATE_NEEDED=0
   exit 0
 fi
diff --git a/sdk_container/src/third_party/coreos-overlay/.github/workflows/go-apply-patch.sh b/sdk_container/src/third_party/coreos-overlay/.github/workflows/go-apply-patch.sh
index fa3b8ce394..ac8734f380 100755
--- a/sdk_container/src/third_party/coreos-overlay/.github/workflows/go-apply-patch.sh
+++ b/sdk_container/src/third_party/coreos-overlay/.github/workflows/go-apply-patch.sh
@@ -19,15 +19,13 @@ for version_new in ${VERSIONS_NEW}; do
   VERSIONS["${version_new_trimmed}"]="${version_new}"
 done
 
-CHECKOUT_SCRIPTS="${CHECKOUT_SCRIPTS:-true}"
-
 . .github/workflows/common.sh
 
 prepare_git_repo
 
 branch_name="go-$(join_by '-and-' ${VERSIONS_NEW})-${TARGET}"
 
-if ! checkout_branches "${branch_name}" "${CHECKOUT_SCRIPTS}"; then
+if ! checkout_branches "${branch_name}"; then
   exit 0
 fi
 
diff --git a/sdk_container/src/third_party/coreos-overlay/.github/workflows/kernel-apply-patch.sh b/sdk_container/src/third_party/coreos-overlay/.github/workflows/kernel-apply-patch.sh
index 1dc1dd35c7..9846ccc5f8 100755
--- a/sdk_container/src/third_party/coreos-overlay/.github/workflows/kernel-apply-patch.sh
+++ b/sdk_container/src/third_party/coreos-overlay/.github/workflows/kernel-apply-patch.sh
@@ -5,13 +5,12 @@ set -euo pipefail
 # trim the 3rd part in the input semver, e.g. from 5.4.1 to 5.4
 VERSION_SHORT=${VERSION_NEW%.*}
 UPDATE_NEEDED=1
-CHECKOUT_SCRIPTS="${CHECKOUT_SCRIPTS:-true}"
 
 . .github/workflows/common.sh
 
 prepare_git_repo
 
-if ! checkout_branches "linux-${VERSION_NEW}-${TARGET}" "${CHECKOUT_SCRIPTS}"; then
+if ! checkout_branches "linux-${VERSION_NEW}-${TARGET}"; then
   UPDATE_NEEDED=0
   exit 0
 fi
diff --git a/sdk_container/src/third_party/coreos-overlay/.github/workflows/kernel-releases-lts-2021.yml b/sdk_container/src/third_party/coreos-overlay/.github/workflows/kernel-releases-lts-2021.yml
index 0ebc33ccda..184e6c3931 100644
--- a/sdk_container/src/third_party/coreos-overlay/.github/workflows/kernel-releases-lts-2021.yml
+++ b/sdk_container/src/third_party/coreos-overlay/.github/workflows/kernel-releases-lts-2021.yml
@@ -33,7 +33,6 @@ jobs:
           BASE_BRANCH: ${{ steps.fetch-latest-release.outputs.BASE_BRANCH_MAINTENANCE }}
           PATH: ${{ steps.setup-flatcar-sdk.outputs.path }}
           VERSION_NEW: ${{ steps.fetch-latest-release.outputs.VERSION_MAINTENANCE }}
-          CHECKOUT_SCRIPTS: "false"
           PACKAGES_CONTAINER: ${{ steps.setup-flatcar-sdk.outputs.PACKAGES_CONTAINER }}
           SDK_NAME: ${{ steps.setup-flatcar-sdk.outputs.SDK_NAME }}
         run: .github/workflows/kernel-apply-patch.sh
diff --git a/sdk_container/src/third_party/coreos-overlay/.github/workflows/runc-apply-patch.sh b/sdk_container/src/third_party/coreos-overlay/.github/workflows/runc-apply-patch.sh
index 8e61e0b073..0efc7abd11 100755
--- a/sdk_container/src/third_party/coreos-overlay/.github/workflows/runc-apply-patch.sh
+++ b/sdk_container/src/third_party/coreos-overlay/.github/workflows/runc-apply-patch.sh
@@ -3,13 +3,12 @@
 set -euo pipefail
 
 UPDATE_NEEDED=1
-CHECKOUT_SCRIPTS="${CHECKOUT_SCRIPTS:-true}"
 
 . .github/workflows/common.sh
 
 prepare_git_repo
 
-if ! checkout_branches "runc-${VERSION_NEW}-${TARGET}" "${CHECKOUT_SCRIPTS}"; then
+if ! checkout_branches "runc-${VERSION_NEW}-${TARGET}"; then
   UPDATE_NEEDED=0
   exit 0
 fi
diff --git a/sdk_container/src/third_party/coreos-overlay/.github/workflows/rust-apply-patch.sh b/sdk_container/src/third_party/coreos-overlay/.github/workflows/rust-apply-patch.sh
index 3cd5c50a0a..c09ced47ac 100755
--- a/sdk_container/src/third_party/coreos-overlay/.github/workflows/rust-apply-patch.sh
+++ b/sdk_container/src/third_party/coreos-overlay/.github/workflows/rust-apply-patch.sh
@@ -3,13 +3,12 @@
 set -euo pipefail
 
 UPDATE_NEEDED=1
-CHECKOUT_SCRIPTS="${CHECKOUT_SCRIPTS:-true}"
 
 . .github/workflows/common.sh
 
 prepare_git_repo
 
-if ! checkout_branches "rust-${VERSION_NEW}-${TARGET}" "${CHECKOUT_SCRIPTS}"; then
+if ! checkout_branches "rust-${VERSION_NEW}-${TARGET}"; then
   UPDATE_NEEDED=0
   exit 0
 fi
diff --git a/sdk_container/src/third_party/coreos-overlay/.github/workflows/vmware-apply-patch.sh b/sdk_container/src/third_party/coreos-overlay/.github/workflows/vmware-apply-patch.sh
index 898132ff93..20f61d5468 100755
--- a/sdk_container/src/third_party/coreos-overlay/.github/workflows/vmware-apply-patch.sh
+++ b/sdk_container/src/third_party/coreos-overlay/.github/workflows/vmware-apply-patch.sh
@@ -3,13 +3,12 @@
 set -euo pipefail
 
 UPDATE_NEEDED=1
-CHECKOUT_SCRIPTS="${CHECKOUT_SCRIPTS:-true}"
 
 . .github/workflows/common.sh
 
 prepare_git_repo
 
-if ! checkout_branches "${VERSION_NEW}-${TARGET}" "${CHECKOUT_SCRIPTS}"; then
+if ! checkout_branches "${VERSION_NEW}-${TARGET}"; then
   UPDATE_NEEDED=0
   exit 0
 fi