diff --git a/tools/init b/tools/init
index dd15c69..be8ac01 100755
--- a/tools/init
+++ b/tools/init
@@ -9,6 +9,8 @@ CLI=("git" "npm")
 
 ACTIONS_WORKFLOW=pages-deploy.yml
 
+RELEASE_HASH=$(git log --grep="chore(release):" -1 --pretty="%H")
+
 # temporary file suffixes that make `sed -i` compatible with BSD and Linux
 TEMP_SUFFIX="to-delete"
 
@@ -28,7 +30,7 @@ help() {
 _sedi() {
   regex=$1
   file=$2
-  sed -i.$TEMP_SUFFIX "$regex" "$file"
+  sed -i.$TEMP_SUFFIX -E "$regex" "$file"
   rm -f "$file".$TEMP_SUFFIX
 }
 
@@ -50,22 +52,7 @@ _check_status() {
 }
 
 _check_init() {
-  local _has_inited=false
-
-  if [[ ! -d .github ]]; then # using option `--no-gh`
-    _has_inited=true
-  else
-    if [[ -f .github/workflows/$ACTIONS_WORKFLOW ]]; then
-      # on BSD, the `wc` could contains blank
-      local _count
-      _count=$(find .github/workflows/ -type f -name "*.yml" | wc -l)
-      if [[ ${_count//[[:blank:]]/} == 1 ]]; then
-        _has_inited=true
-      fi
-    fi
-  fi
-
-  if $_has_inited; then
+  if [[ $(git rev-parse HEAD^1) == "$RELEASE_HASH" ]]; then
     echo "Already initialized."
     exit 0
   fi
@@ -77,22 +64,25 @@ check_env() {
   _check_init
 }
 
-checkout_latest_release() {
-  hash=$(git log --grep="chore(release):" -1 --pretty="%H")
-  git reset --hard "$hash"
+reset_latest() {
+  git reset --hard "$RELEASE_HASH"
+  git clean -fd
+  git submodule update --init --recursive
 }
 
 init_files() {
   if $_no_gh; then
     rm -rf .github
   else
-    ## Change the files of `.github`
-    mv .github/workflows/starter/$ACTIONS_WORKFLOW .
+    ## Change the files of `.github/`
+    temp="$(mktemp -d)"
+    find .github/workflows -type f -name "*$ACTIONS_WORKFLOW*" -exec mv {} "$temp/$ACTIONS_WORKFLOW" \;
     rm -rf .github && mkdir -p .github/workflows
-    mv ./$ACTIONS_WORKFLOW .github/workflows/${ACTIONS_WORKFLOW}
+    mv "$temp/$ACTIONS_WORKFLOW" .github/workflows/"$ACTIONS_WORKFLOW"
+    rm -rf "$temp"
 
     ## Cleanup image settings in site config
-    _sedi "s/^cdn:.*/cdn:/;s/^avatar:.*/avatar:/" _config.yml
+    _sedi "s/(^.*cdn:).*/\1/;s/(^avatar:).*/\1/" _config.yml
   fi
 
   # remove the other files
@@ -108,12 +98,12 @@ init_files() {
 commit() {
   git add -A
   git commit -m "chore: initialize the environment" -q
-  echo -e "\n[INFO] Initialization successful!\n"
+  echo -e "\n> Initialization successful!\n"
 }
 
 main() {
   check_env
-  checkout_latest_release
+  reset_latest
   init_files
   commit
 }