diff --git a/scripts/ci/amd/amd_ci_install_dependency.sh b/scripts/ci/amd/amd_ci_install_dependency.sh
index b65a5ffd1..87ef53126 100755
--- a/scripts/ci/amd/amd_ci_install_dependency.sh
+++ b/scripts/ci/amd/amd_ci_install_dependency.sh
@@ -135,38 +135,8 @@ ensure_httpx() {
   install_with_retry docker exec ci_sglang pip install --cache-dir=/sgl-data/pip-cache --upgrade 'httpx>=0.25.0'
 }
 
-# Helper function to git clone with retries
-git_clone_with_retry() {
-  local repo_url="$1"
-  local dest_dir="${2:-}"
-  local branch_args="${3:-}"
-  local max_attempts=3
-
-  for attempt in $(seq 1 $max_attempts); do
-    echo "Git clone attempt $attempt/$max_attempts: $repo_url"
-
-    # prevent from partial clone
-    if [ -n "$dest_dir" ] && [ -d "$dest_dir" ]; then
-      rm -rf "$dest_dir"
-    fi
-
-    if git \
-      -c http.lowSpeedLimit=1000 \
-      -c http.lowSpeedTime=30 \
-      clone --depth 1 ${branch_args:+$branch_args} "$repo_url" "$dest_dir"; then
-      echo "Git clone succeeded."
-      return 0
-    fi
-
-    if [ $attempt -lt $max_attempts ]; then
-      echo "Git clone failed, retrying in 5 seconds..."
-      sleep 5
-    fi
-  done
-
-  echo "Git clone failed after $max_attempts attempts: $repo_url"
-  return 1
-}
+# shellcheck source=scripts/ci/utils/git_clone_with_retry.sh
+source "$(dirname "${BASH_SOURCE[0]}")/../utils/git_clone_with_retry.sh"
 
 # Install checkout sglang
 if [ -n "$SKIP_SGLANG_BUILD" ]; then
diff --git a/scripts/ci/cuda/ci_install_dependency.sh b/scripts/ci/cuda/ci_install_dependency.sh
index 5c2d93e16..ee8bb5cb2 100755
--- a/scripts/ci/cuda/ci_install_dependency.sh
+++ b/scripts/ci/cuda/ci_install_dependency.sh
@@ -8,6 +8,9 @@ set -euxo pipefail
 SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
 REPO_ROOT="$(cd "${SCRIPT_DIR}/../../.." && pwd)"
 
+# shellcheck source=scripts/ci/utils/git_clone_with_retry.sh
+source "${SCRIPT_DIR}/../utils/git_clone_with_retry.sh"
+
 # ---------------------------------------------------------------------------
 # Timing helper
 # ---------------------------------------------------------------------------
@@ -207,9 +210,7 @@ install_gdrcopy() {
         done
     }
 
-    rm -rf "${gdrcopy_root}"
-    git clone --branch "v${gdrcopy_version}" --depth 1 \
-        https://github.com/NVIDIA/gdrcopy.git "${gdrcopy_root}"
+    git_clone_with_retry https://github.com/NVIDIA/gdrcopy.git "${gdrcopy_root}" "--branch v${gdrcopy_version}"
     (
         cd "${gdrcopy_root}/packages"
         CUDA=/usr/local/cuda ./build-deb-packages.sh
@@ -762,7 +763,7 @@ install_extra_deps() {
     fi
 
     if [ "$IS_BLACKWELL" != "1" ]; then
-        git clone --branch v0.5 --depth 1 https://github.com/EvolvingLMMs-Lab/lmms-eval.git
+        git_clone_with_retry https://github.com/EvolvingLMMs-Lab/lmms-eval.git lmms-eval "--branch v0.5"
         $PIP_CMD install -e lmms-eval/ $PIP_INSTALL_SUFFIX
         # lmms-eval v0.5 pulls antlr4-python3-runtime==4.7.2, clobbering the
         # 4.9.3 that sgl-eval's latex2sympy2_extended needs (4.7.2 ImportError
@@ -784,7 +785,7 @@ install_test_tools() {
 
     # Install human-eval (subshell keeps cd local)
     $PIP_CMD install "setuptools==70.0.0" $PIP_INSTALL_SUFFIX
-    [ -d human-eval ] || git clone https://github.com/merrymercy/human-eval.git
+    [ -d human-eval ] || git_clone_with_retry https://github.com/merrymercy/human-eval.git human-eval
     (
         cd human-eval
         $PIP_CMD install -e . --no-build-isolation $PIP_INSTALL_SUFFIX
diff --git a/scripts/ci/utils/git_clone_with_retry.sh b/scripts/ci/utils/git_clone_with_retry.sh
new file mode 100755
index 000000000..08ad438fb
--- /dev/null
+++ b/scripts/ci/utils/git_clone_with_retry.sh
@@ -0,0 +1,63 @@
+#!/bin/bash
+# GitHub rate limits anonymous git-over-HTTPS per source IP; shared runner egress
+# trips it as "could not read Username for 'https://github.com'".
+
+_git_with_github_auth() {
+  # Disable xtrace before touching the auth header so it is not echoed.
+  local xtrace=0
+  [[ $- == *x* ]] && xtrace=1
+  { set +x; } 2>/dev/null
+
+  local repo_root
+  repo_root="$(cd "$(dirname "${BASH_SOURCE[0]}")/../../.." && pwd)"
+  # Persisted by actions/checkout; absent under persist-credentials: false, and
+  # the clone then stays anonymous by design.
+  local header
+  header="$(git -C "$repo_root" config --local --get http.https://github.com/.extraheader 2>/dev/null || true)"
+
+  local rc=0
+  if [ -z "$header" ]; then
+    "$@" || rc=$?
+  else
+    GIT_CONFIG_COUNT=1 \
+    GIT_CONFIG_KEY_0="http.https://github.com/.extraheader" \
+    GIT_CONFIG_VALUE_0="$header" \
+      "$@" || rc=$?
+  fi
+
+  [ "$xtrace" = 1 ] && set -x
+  return $rc
+}
+
+# Helper function to git clone with retries
+git_clone_with_retry() {
+  local repo_url="$1"
+  local dest_dir="${2:-}"
+  local branch_args="${3:-}"
+  local max_attempts=3
+
+  for attempt in $(seq 1 $max_attempts); do
+    echo "Git clone attempt $attempt/$max_attempts: $repo_url"
+
+    # prevent from partial clone
+    if [ -n "$dest_dir" ] && [ -d "$dest_dir" ]; then
+      rm -rf "$dest_dir"
+    fi
+
+    if _git_with_github_auth git \
+      -c http.lowSpeedLimit=1000 \
+      -c http.lowSpeedTime=30 \
+      clone --depth 1 ${branch_args:+$branch_args} "$repo_url" "$dest_dir"; then
+      echo "Git clone succeeded."
+      return 0
+    fi
+
+    if [ $attempt -lt $max_attempts ]; then
+      echo "Git clone failed, retrying in 5 seconds..."
+      sleep 5
+    fi
+  done
+
+  echo "Git clone failed after $max_attempts attempts: $repo_url"
+  return 1
+}