diff --git a/cyberpanel.sh b/cyberpanel.sh
index 1b7d9007e..8d074e1b9 100644
--- a/cyberpanel.sh
+++ b/cyberpanel.sh
@@ -528,9 +528,13 @@ curl --max-time 20 -d '{"ipAddress": "'"$Server_IP"'", "InstallCyberPanelStatus"
 }
 
 Branch_Check() {
-if [[ "$1" = *.*.* ]]; then
-  #check input if it's valid format as X.Y.Z
-  Output=$(awk -v num1="$Base_Number" -v num2="${1//[[:space:]]/}" '
+# Enhanced version validation to handle stable versions, development versions, and commit hashes
+if [[ "$1" =~ ^[0-9]+\.[0-9]+\.[0-9]+(-dev)?$ ]]; then
+  # Handle version numbers (stable and development)
+  version_number=$(echo "$1" | sed 's/-dev$//')
+  
+  # Check if version is higher than 2.3.4
+  Output=$(awk -v num1="$Base_Number" -v num2="$version_number" '
   BEGIN {
     print "num1", (num1 < num2 ? "<" : ">="), "num2"
   }
@@ -539,11 +543,26 @@ if [[ "$1" = *.*.* ]]; then
     echo -e "\nYou must use version number higher than 2.3.4"
     exit
   else
-    Branch_Name="v${1//[[:space:]]/}"
-    echo -e "\nSet branch name to $Branch_Name..."
+    # Handle both stable and development versions
+    if [[ "$1" =~ -dev$ ]]; then
+      Branch_Name="${1//[[:space:]]/}"
+      echo -e "\nSet branch name to $Branch_Name (development version)..."
+    else
+      Branch_Name="v${1//[[:space:]]/}"
+      echo -e "\nSet branch name to $Branch_Name (stable version)..."
+    fi
   fi
+elif [[ "$1" =~ ^[a-f0-9]{7,40}$ ]]; then
+  # Handle commit hashes (7-40 character hex strings)
+  commit_hash="${1//[[:space:]]/}"
+  Branch_Name="commit:$commit_hash"
+  echo -e "\nSet branch name to commit $commit_hash..."
+  echo -e "This will install from the specific commit: $commit_hash"
 else
-  echo -e "\nPlease input a valid format version number."
+  echo -e "\nPlease input a valid format:"
+  echo -e "  Version number: 2.4.4, 2.5.0, 2.5.5-dev"
+  echo -e "  Commit hash: b05d9cb5bb3c277b22a6070f04844e8a7951585b"
+  echo -e "  Short commit: b05d9cb"
   exit
 fi
 }
@@ -1195,7 +1214,13 @@ else
   echo -e "\nLocal MySQL selected..."
 fi
 
-echo -e "\nPress \e[31mEnter\e[39m key to continue with latest version or Enter specific version such as: \e[31m2.3.4\e[39m , \e[31m2.4.4\e[39m , \e[31m2.5.0\e[39m ...etc"
+echo -e "\nPress \e[31mEnter\e[39m key to continue with latest version or Enter specific version such as:"
+echo -e "  \e[31m2.4.4\e[39m (stable version)"
+echo -e "  \e[31m2.5.0\e[39m (stable version)" 
+echo -e "  \e[31m2.5.5-dev\e[39m (development version)"
+echo -e "  \e[31m2.6.0-dev\e[39m (development version)"
+echo -e "  \e[31mb05d9cb5bb3c277b22a6070f04844e8a7951585b\e[39m (specific commit)"
+echo -e "  \e[31mb05d9cb\e[39m (short commit hash)"
 printf "%s" ""
 read -r Tmp_Input
 
diff --git a/cyberpanel_upgrade.sh b/cyberpanel_upgrade.sh
index 2eeebdd95..c4fe53f9f 100644
--- a/cyberpanel_upgrade.sh
+++ b/cyberpanel_upgrade.sh
@@ -151,6 +151,10 @@ elif grep -q -E "Rocky Linux" /etc/os-release ; then
   Server_OS="RockyLinux"
 elif grep -q -E "AlmaLinux-8|AlmaLinux-9|AlmaLinux-10" /etc/os-release ; then
   Server_OS="AlmaLinux"
+  # Set specific version for AlmaLinux 9+ to use dnf instead of yum
+  if grep -q -E "AlmaLinux-9|AlmaLinux-10" /etc/os-release ; then
+    Server_OS="AlmaLinux9"
+  fi
 elif grep -q -E "Ubuntu 18.04|Ubuntu 20.04|Ubuntu 20.10|Ubuntu 22.04|Ubuntu 24.04|Ubuntu 24.04.3" /etc/os-release ; then
   Server_OS="Ubuntu"
 elif grep -q -E "Debian GNU/Linux 11|Debian GNU/Linux 12|Debian GNU/Linux 13" /etc/os-release ; then
@@ -170,9 +174,12 @@ Server_OS_Version=$(grep VERSION_ID /etc/os-release | awk -F[=,] '{print $2}' |
 echo -e "System: $Server_OS $Server_OS_Version detected...\n"
 
 if [[ $Server_OS = "CloudLinux" ]] || [[ "$Server_OS" = "AlmaLinux" ]] || [[ "$Server_OS" = "RockyLinux" ]] || [[ "$Server_OS" = "RedHat" ]]; then
-  Server_OS="CentOS"
-  #CloudLinux gives version id like 7.8, 7.9, so cut it to show first number only
-  #treat CloudLinux, Rocky and Alma as CentOS
+  # Keep AlmaLinux9 separate for dnf package management
+  if [[ "$Server_OS" != "AlmaLinux9" ]]; then
+    Server_OS="CentOS"
+    #CloudLinux gives version id like 7.8, 7.9, so cut it to show first number only
+    #treat CloudLinux, Rocky and Alma as CentOS
+  fi
 fi
 
 if [[ "$Debug" = "On" ]] ; then
@@ -358,8 +365,8 @@ mysql -uroot -p"$MySQL_Password" -e "GRANT ALL PRIVILEGES ON *.* TO 'root'@'loca
 Pre_Upgrade_Setup_Repository() {
 echo -e "[$(date +"%Y-%m-%d %H:%M:%S")] Pre_Upgrade_Setup_Repository started for OS: $Server_OS" | tee -a /var/log/cyberpanel_upgrade_debug.log
 
-if [[ "$Server_OS" = "CentOS" ]] ; then
-  echo -e "[$(date +"%Y-%m-%d %H:%M:%S")] Setting up CentOS repositories..." | tee -a /var/log/cyberpanel_upgrade_debug.log
+if [[ "$Server_OS" = "CentOS" ]] || [[ "$Server_OS" = "AlmaLinux9" ]] ; then
+  echo -e "[$(date +"%Y-%m-%d %H:%M:%S")] Setting up repositories for $Server_OS..." | tee -a /var/log/cyberpanel_upgrade_debug.log
   rm -f /etc/yum.repos.d/CyberPanel.repo
   rm -f /etc/yum.repos.d/litespeed.repo
   if [[ "$Server_Country" = "CN" ]] ; then
@@ -477,6 +484,28 @@ EOF
   fi
 
   dnf install epel-release -y
+  
+  # AlmaLinux 9 specific package installation
+  if [[ "$Server_OS" = "AlmaLinux9" ]] ; then
+    echo -e "[$(date +"%Y-%m-%d %H:%M:%S")] Installing AlmaLinux 9 specific packages..." | tee -a /var/log/cyberpanel_upgrade_debug.log
+    
+    # Install essential build tools
+    dnf groupinstall -y 'Development Tools'
+    
+    # Install PHP dependencies that are missing on AlmaLinux 9
+    dnf install -y ImageMagick ImageMagick-devel gd gd-devel libicu libicu-devel \
+                   oniguruma oniguruma-devel aspell aspell-devel libc-client libc-client-devel \
+                   libmemcached libmemcached-devel freetype-devel libjpeg-turbo-devel \
+                   libpng-devel libwebp-devel libXpm-devel libzip-devel openssl-devel \
+                   sqlite-devel libxml2-devel libxslt-devel curl-devel libedit-devel \
+                   readline-devel pkgconfig cmake gcc-c++
+    
+    # Install MariaDB
+    dnf install -y mariadb-server mariadb-devel mariadb-client
+    
+    # Install additional required packages
+    dnf install -y wget curl unzip zip rsync firewalld psmisc git python3 python3-pip python3-devel
+  fi
 
   dnf install -y wget strace htop net-tools telnet curl which bc telnet htop libevent-devel gcc libattr-devel xz-devel mariadb-connector-c-devel curl-devel git platform-python-devel tar socat bind-utils
   dnf install gpgme-devel -y
@@ -977,9 +1006,12 @@ if [[ $NEEDS_RECREATE -eq 1 ]] || [[ ! -d /usr/local/CyberCP/bin ]]; then
     if [[ "$Server_OS" = "Ubuntu" ]] && [[ "$Server_OS_Version" = "22" ]]; then
       echo -e "[$(date +"%Y-%m-%d %H:%M:%S")] Ubuntu 22.04 detected, ensuring virtualenv is properly installed..." | tee -a /var/log/cyberpanel_upgrade_debug.log
       pip3 install --upgrade virtualenv 2>&1 | tee -a /var/log/cyberpanel_upgrade_debug.log
-    elif [[ "$Server_OS" = "CentOS" ]] && ([[ "$Server_OS_Version" = "9" ]] || [[ "$Server_OS_Version" = "10" ]]); then
-      echo -e "[$(date +"%Y-%m-%d %H:%M:%S")] AlmaLinux/Rocky Linux 9/10 detected, ensuring virtualenv is properly installed..." | tee -a /var/log/cyberpanel_upgrade_debug.log
-      pip3 install --upgrade virtualenv 2>&1 | tee -a /var/log/cyberpanel_upgrade_debug.log
+  elif [[ "$Server_OS" = "CentOS" ]] && ([[ "$Server_OS_Version" = "9" ]] || [[ "$Server_OS_Version" = "10" ]]); then
+    echo -e "[$(date +"%Y-%m-%d %H:%M:%S")] AlmaLinux/Rocky Linux 9/10 detected, ensuring virtualenv is properly installed..." | tee -a /var/log/cyberpanel_upgrade_debug.log
+    pip3 install --upgrade virtualenv 2>&1 | tee -a /var/log/cyberpanel_upgrade_debug.log
+  elif [[ "$Server_OS" = "AlmaLinux9" ]]; then
+    echo -e "[$(date +"%Y-%m-%d %H:%M:%S")] AlmaLinux 9 detected, ensuring virtualenv is properly installed..." | tee -a /var/log/cyberpanel_upgrade_debug.log
+    pip3 install --upgrade virtualenv 2>&1 | tee -a /var/log/cyberpanel_upgrade_debug.log
     fi
     
     # Find the correct python3 path
@@ -987,6 +1019,10 @@ if [[ $NEEDS_RECREATE -eq 1 ]] || [[ ! -d /usr/local/CyberCP/bin ]]; then
       PYTHON_PATH=$(which python3 2>/dev/null || which python3.9 2>/dev/null || echo "/usr/bin/python3")
       echo -e "[$(date +"%Y-%m-%d %H:%M:%S")] Using Python path: $PYTHON_PATH" | tee -a /var/log/cyberpanel_upgrade_debug.log
       virtualenv_output=$(virtualenv -p "$PYTHON_PATH" /usr/local/CyberCP 2>&1)
+    elif [[ "$Server_OS" = "AlmaLinux9" ]]; then
+      PYTHON_PATH=$(which python3 2>/dev/null || which python3.9 2>/dev/null || echo "/usr/bin/python3")
+      echo -e "[$(date +"%Y-%m-%d %H:%M:%S")] AlmaLinux 9 - Using Python path: $PYTHON_PATH" | tee -a /var/log/cyberpanel_upgrade_debug.log
+      virtualenv_output=$(virtualenv -p "$PYTHON_PATH" /usr/local/CyberCP 2>&1)
     else
       virtualenv_output=$(virtualenv -p /usr/bin/python3 /usr/local/CyberCP 2>&1)
     fi
diff --git a/install.sh b/install.sh
index 4e4f7b9ed..46757eb24 100644
--- a/install.sh
+++ b/install.sh
@@ -34,8 +34,15 @@ yum update curl wget ca-certificates -y 1> /dev/null
 elif echo $OUTPUT | grep -q "AlmaLinux 9" ; then
         echo -e "\nDetecting AlmaLinux 9...\n"
         SERVER_OS="AlmaLinux9"
-dnf install curl wget -y 1> /dev/null
-dnf update curl wget ca-certificates -y 1> /dev/null
+        echo "Installing essential packages for AlmaLinux 9..."
+        dnf install curl wget -y 1> /dev/null
+        dnf update curl wget ca-certificates -y 1> /dev/null
+        
+        # Install additional packages needed for AlmaLinux 9
+        echo "Installing additional dependencies for AlmaLinux 9..."
+        dnf install -y epel-release 1> /dev/null
+        dnf groupinstall -y 'Development Tools' 1> /dev/null
+        dnf install -y ImageMagick gd libicu oniguruma aspell libc-client 1> /dev/null
 elif echo $OUTPUT | grep -q "AlmaLinux 10" ; then
         echo -e "\nDetecting AlmaLinux 10...\n"
         SERVER_OS="AlmaLinux10"
@@ -143,12 +150,27 @@ fi
 rm -f cyberpanel.sh
 rm -f install.tar.gz
 
-# Download from appropriate source based on branch
+# Download from appropriate source based on branch/commit
 if [ -n "$BRANCH_NAME" ]; then
-    echo "Installing CyberPanel from branch: $BRANCH_NAME"
-    curl --silent -o cyberpanel.sh "https://raw.githubusercontent.com/usmannasir/cyberpanel/$BRANCH_NAME/cyberpanel.sh" 2>/dev/null
-    # Set environment variable for version detection
-    export CYBERPANEL_BRANCH="$BRANCH_NAME"
+    # Check if it's a commit hash
+    if [[ "$BRANCH_NAME" =~ ^[a-f0-9]{7,40}$ ]]; then
+        echo "Installing CyberPanel from commit: $BRANCH_NAME"
+        curl --silent -o cyberpanel.sh "https://raw.githubusercontent.com/usmannasir/cyberpanel/$BRANCH_NAME/cyberpanel.sh" 2>/dev/null
+        # Set environment variable for commit detection
+        export CYBERPANEL_BRANCH="$BRANCH_NAME"
+    elif [[ "$BRANCH_NAME" =~ ^commit: ]]; then
+        # It's a commit with prefix
+        commit_hash="${BRANCH_NAME#commit:}"
+        echo "Installing CyberPanel from commit: $commit_hash"
+        curl --silent -o cyberpanel.sh "https://raw.githubusercontent.com/usmannasir/cyberpanel/$commit_hash/cyberpanel.sh" 2>/dev/null
+        # Set environment variable for commit detection
+        export CYBERPANEL_BRANCH="$commit_hash"
+    else
+        echo "Installing CyberPanel from branch: $BRANCH_NAME"
+        curl --silent -o cyberpanel.sh "https://raw.githubusercontent.com/usmannasir/cyberpanel/$BRANCH_NAME/cyberpanel.sh" 2>/dev/null
+        # Set environment variable for version detection
+        export CYBERPANEL_BRANCH="$BRANCH_NAME"
+    fi
 else
     echo "Installing CyberPanel stable version"
     curl --silent -o cyberpanel.sh "https://cyberpanel.sh/?dl&$SERVER_OS" 2>/dev/null
diff --git a/install/install.py b/install/install.py
index 315256d78..f7910c08f 100644
--- a/install/install.py
+++ b/install/install.py
@@ -1438,12 +1438,40 @@ class preFlightsChecks:
         # Ensure the parent directory exists
         os.makedirs("/usr/local", exist_ok=True)
         
+        # Determine the correct branch/tag/commit to clone
+        branch_name = os.environ.get('CYBERPANEL_BRANCH', 'stable')
+        
         # Try multiple clone methods for better reliability
-        clone_commands = [
+        clone_commands = []
+        
+        # If a specific branch/tag/commit is specified, try to clone it
+        if branch_name and branch_name != 'stable':
+            if branch_name.startswith('commit:'):
+                # It's a commit hash (e.g., commit:b05d9cb5bb3c277b22a6070f04844e8a7951585b)
+                commit_hash = branch_name[7:]  # Remove 'commit:' prefix
+                clone_commands.append(f"git clone https://github.com/usmannasir/cyberpanel /usr/local/CyberCP")
+                clone_commands.append(f"cd /usr/local/CyberCP && git checkout {commit_hash}")
+            elif branch_name.startswith('v'):
+                # It's a tag (e.g., v2.4.4)
+                clone_commands.append(f"git clone --depth 1 --branch {branch_name} https://github.com/usmannasir/cyberpanel /usr/local/CyberCP")
+            elif branch_name.endswith('-dev'):
+                # It's a development branch (e.g., 2.5.5-dev)
+                clone_commands.append(f"git clone --depth 1 --branch {branch_name} https://github.com/usmannasir/cyberpanel /usr/local/CyberCP")
+            elif len(branch_name) >= 7 and all(c in '0123456789abcdef' for c in branch_name.lower()):
+                # It's a commit hash (e.g., b05d9cb5bb3c277b22a6070f04844e8a7951585b)
+                clone_commands.append(f"git clone https://github.com/usmannasir/cyberpanel /usr/local/CyberCP")
+                clone_commands.append(f"cd /usr/local/CyberCP && git checkout {branch_name}")
+            else:
+                # It's a version number, try as both tag and branch
+                clone_commands.append(f"git clone --depth 1 --branch v{branch_name} https://github.com/usmannasir/cyberpanel /usr/local/CyberCP")
+                clone_commands.append(f"git clone --depth 1 --branch {branch_name} https://github.com/usmannasir/cyberpanel /usr/local/CyberCP")
+        
+        # Fallback to stable branch
+        clone_commands.extend([
             "git clone https://github.com/usmannasir/cyberpanel /usr/local/CyberCP",
             "git clone --depth 1 https://github.com/usmannasir/cyberpanel /usr/local/CyberCP",
             "git clone --single-branch --branch stable https://github.com/usmannasir/cyberpanel /usr/local/CyberCP"
-        ]
+        ])
         
         clone_success = False
         for cmd in clone_commands:
@@ -1461,13 +1489,42 @@ class preFlightsChecks:
             
             # Try manual download as fallback
             logging.InstallLog.writeToFile("Attempting manual download as fallback...")
-            command = "wget -O /tmp/cyberpanel.zip https://github.com/usmannasir/cyberpanel/archive/refs/heads/stable.zip"
+            
+            # Determine the correct download URL based on branch/tag/commit
+            if branch_name and branch_name != 'stable':
+                if branch_name.startswith('commit:'):
+                    # It's a commit hash - use the commit hash directly
+                    commit_hash = branch_name[7:]  # Remove 'commit:' prefix
+                    download_url = f"https://github.com/usmannasir/cyberpanel/archive/{commit_hash}.zip"
+                    extract_dir = f"cyberpanel-{commit_hash}"
+                elif len(branch_name) >= 7 and all(c in '0123456789abcdef' for c in branch_name.lower()):
+                    # It's a commit hash (e.g., b05d9cb5bb3c277b22a6070f04844e8a7951585b)
+                    download_url = f"https://github.com/usmannasir/cyberpanel/archive/{branch_name}.zip"
+                    extract_dir = f"cyberpanel-{branch_name}"
+                elif branch_name.startswith('v'):
+                    # It's a tag
+                    download_url = f"https://github.com/usmannasir/cyberpanel/archive/refs/tags/{branch_name}.zip"
+                    extract_dir = f"cyberpanel-{branch_name[1:]}"  # Remove 'v' prefix
+                elif branch_name.endswith('-dev'):
+                    # It's a development branch
+                    download_url = f"https://github.com/usmannasir/cyberpanel/archive/refs/heads/{branch_name}.zip"
+                    extract_dir = f"cyberpanel-{branch_name}"
+                else:
+                    # It's a version number, try as tag first
+                    download_url = f"https://github.com/usmannasir/cyberpanel/archive/refs/tags/v{branch_name}.zip"
+                    extract_dir = f"cyberpanel-{branch_name}"
+            else:
+                # Default to stable
+                download_url = "https://github.com/usmannasir/cyberpanel/archive/refs/heads/stable.zip"
+                extract_dir = "cyberpanel-stable"
+            
+            command = f"wget -O /tmp/cyberpanel.zip {download_url}"
             preFlightsChecks.call(command, self.distro, command, command, 1, 1, os.EX_OSERR)
             
             command = "unzip /tmp/cyberpanel.zip -d /usr/local/"
             preFlightsChecks.call(command, self.distro, command, command, 1, 1, os.EX_OSERR)
             
-            command = "mv /usr/local/cyberpanel-stable /usr/local/CyberCP"
+            command = f"mv /usr/local/{extract_dir} /usr/local/CyberCP"
             preFlightsChecks.call(command, self.distro, command, command, 1, 1, os.EX_OSERR)
             
             command = "rm -f /tmp/cyberpanel.zip"
diff --git a/test_installation.sh b/test_installation.sh
new file mode 100644
index 000000000..0284ed423
--- /dev/null
+++ b/test_installation.sh
@@ -0,0 +1,139 @@
+#!/bin/bash
+
+# CyberPanel Installation Test Script
+# Tests the updated installer with different version inputs
+
+echo "=========================================="
+echo "CyberPanel Installation Test Script"
+echo "=========================================="
+
+# Test 1: Test version validation function
+echo "Test 1: Testing version validation function..."
+
+# Source the cyberpanel.sh script to get the Branch_Check function
+source cyberpanel.sh 2>/dev/null || true
+
+# Test cases
+test_versions=("2.4.4" "2.5.0" "2.5.5-dev" "2.6.0-dev" "b05d9cb5bb3c277b22a6070f04844e8a7951585b" "b05d9cb" "invalid-version" "2.3.3")
+
+for version in "${test_versions[@]}"; do
+    echo "Testing version: $version"
+    if Branch_Check "$version" 2>/dev/null; then
+        echo "  ✓ PASS: $version is valid"
+    else
+        echo "  ✗ FAIL: $version is invalid"
+    fi
+done
+
+echo ""
+echo "Test 2: Testing OS detection..."
+
+# Test OS detection
+if [[ -f /etc/os-release ]]; then
+    source /etc/os-release
+    echo "Detected OS: $NAME $VERSION_ID"
+    
+    if [[ "$NAME" == "AlmaLinux" ]] && [[ "$VERSION_ID" == "9"* ]]; then
+        echo "  ✓ PASS: AlmaLinux 9 detected correctly"
+    else
+        echo "  ℹ INFO: Not AlmaLinux 9, skipping AlmaLinux 9 specific tests"
+    fi
+else
+    echo "  ✗ FAIL: Cannot detect OS (no /etc/os-release)"
+fi
+
+echo ""
+echo "Test 3: Testing package availability..."
+
+# Test if required packages are available
+if command -v dnf >/dev/null 2>&1; then
+    echo "Testing dnf package availability..."
+    
+    required_packages=("ImageMagick" "gd" "libicu" "oniguruma" "aspell" "libc-client" "mariadb-server")
+    
+    for package in "${required_packages[@]}"; do
+        if dnf list available "$package" >/dev/null 2>&1; then
+            echo "  ✓ PASS: $package is available"
+        else
+            echo "  ✗ FAIL: $package is not available"
+        fi
+    done
+elif command -v yum >/dev/null 2>&1; then
+    echo "Testing yum package availability..."
+    
+    required_packages=("ImageMagick" "gd" "libicu" "oniguruma" "aspell" "libc-client" "mariadb-server")
+    
+    for package in "${required_packages[@]}"; do
+        if yum list available "$package" >/dev/null 2>&1; then
+            echo "  ✓ PASS: $package is available"
+        else
+            echo "  ✗ FAIL: $package is not available"
+        fi
+    done
+else
+    echo "  ℹ INFO: No dnf/yum available, skipping package tests"
+fi
+
+echo ""
+echo "Test 4: Testing Git clone functionality..."
+
+# Test Git clone with different branches and commits
+test_branches=("stable" "v2.4.4" "2.5.5-dev" "b05d9cb5bb3c277b22a6070f04844e8a7951585b" "b05d9cb")
+
+for branch in "${test_branches[@]}"; do
+    echo "Testing Git clone for branch/commit: $branch"
+    
+    # Create temporary directory for testing
+    test_dir="/tmp/cyberpanel_test_$branch"
+    rm -rf "$test_dir"
+    
+    if [[ "$branch" == "stable" ]]; then
+        clone_cmd="git clone --depth 1 https://github.com/usmannasir/cyberpanel $test_dir"
+    elif [[ "$branch" == v* ]]; then
+        clone_cmd="git clone --depth 1 --branch $branch https://github.com/usmannasir/cyberpanel $test_dir"
+    elif [[ "$branch" =~ ^[a-f0-9]{7,40}$ ]]; then
+        # It's a commit hash
+        clone_cmd="git clone https://github.com/usmannasir/cyberpanel $test_dir && cd $test_dir && git checkout $branch"
+    else
+        clone_cmd="git clone --depth 1 --branch $branch https://github.com/usmannasir/cyberpanel $test_dir"
+    fi
+    
+    if eval "$clone_cmd" >/dev/null 2>&1; then
+        if [[ -d "$test_dir" ]] && [[ -f "$test_dir/install/install.py" ]]; then
+            echo "  ✓ PASS: Successfully cloned $branch"
+        else
+            echo "  ✗ FAIL: Cloned $branch but missing files"
+        fi
+        rm -rf "$test_dir"
+    else
+        echo "  ✗ FAIL: Failed to clone $branch"
+    fi
+done
+
+echo ""
+echo "Test 5: Testing environment variable handling..."
+
+# Test environment variable handling
+export CYBERPANEL_BRANCH="2.5.5-dev"
+echo "Testing with CYBERPANEL_BRANCH=$CYBERPANEL_BRANCH"
+
+if [[ "$CYBERPANEL_BRANCH" == *"-dev" ]]; then
+    echo "  ✓ PASS: Development branch detected correctly"
+else
+    echo "  ✗ FAIL: Development branch not detected"
+fi
+
+unset CYBERPANEL_BRANCH
+
+echo ""
+echo "=========================================="
+echo "Test Summary:"
+echo "=========================================="
+echo "1. Version validation: Check if all test versions are handled correctly"
+echo "2. OS detection: Verify AlmaLinux 9 is detected properly"
+echo "3. Package availability: Ensure required packages are available"
+echo "4. Git clone: Test cloning different branches/tags"
+echo "5. Environment variables: Test branch detection from environment"
+echo ""
+echo "If all tests pass, the installer should work correctly."
+echo "If any tests fail, check the specific error messages above."