diff --git a/cd.sh b/cd.sh
index 831689b..9faa82b 100644
--- a/cd.sh
+++ b/cd.sh
@@ -27,6 +27,7 @@ case "${CD_OS_NAME}" in
         exit 1
     ;;
 esac
+#
 [ "${CI_SERVER_URL}" ] && CD_REPOSITORIES_URL="${CI_SERVER_URL}"
 [ "${GITHUB_SERVER_URL}" ] && CD_REPOSITORIES_URL="${GITHUB_SERVER_URL}"
 if [ "${CD_REPOSITORIES_URL}" ] ; then
@@ -35,6 +36,23 @@ else
     echo 'CD_REPOSITORIES_URL'
     exit 3
 fi
+#
+[ "${CI_PROJECT_NAME}" ] && CD_PROJECT_NAME="${CI_PROJECT_NAME}"
+[ "${GITHUB_REPOSITORY}" ] \
+&& CD_PROJECT_NAME="$(basename "${GITHUB_REPOSITORY}")"
+if [ "${CD_PROJECT_NAME}" ] ; then
+    CD_PROJECT_URL="${CD_REPOSITORIES_URL}/${CD_PROJECT_NAME}"
+else
+    echo 'CD_PROJECT_NAME'
+    exit 3
+fi
+#
+[ "${CI_COMMIT_BRANCH}" ] && CD_PROJECT_BRANCH="${CI_COMMIT_BRANCH}"
+[ "${GITHUB_REF_NAME}" ] && CD_PROJECT_BRANCH="${GITHUB_REF_NAME}"
+if [ ! "${CD_PROJECT_BRANCH}" ] ; then
+    echo 'CD_PROJECT_BRANCH'
+    exit 3
+fi
 
 function cd_step {
     if [ "${1}" ] ; then
diff --git a/cd/__init__.py b/cd/__init__.py
index 17399ce..0849737 100644
--- a/cd/__init__.py
+++ b/cd/__init__.py
@@ -1,8 +1,20 @@
 import os
 
+from rwx import ps
+
 COMMANDS_PREFIX = 'cd-'
 
 
+def cd_clone_branch():
+    ps.run('git',
+        'clone',
+        '--branch', os.environ['CD_PROJECT_BRANCH'],
+        '--',
+        os.environ['CD_PROJECT_URL'],
+        '.',
+    )
+
+
 def cd_list_environment():
     for variable, value in sorted(os.environ.items()):
         print(variable, '=', value)
@@ -10,5 +22,8 @@ def cd_list_environment():
 
 def install_commands(path):
     user = '/usr/local/bin'
-    for command in ['list-environment']:
+    for command in [
+        'clone-branch',
+        'list-environment',
+    ]:
         os.symlink(path, os.path.join(user, f'{COMMANDS_PREFIX}{command}'))