diff --git a/scripts/install b/scripts/install
index c50a19b..4895382 100644
--- a/scripts/install
+++ b/scripts/install
@@ -86,9 +86,11 @@ ynh_script_progression --message="Setting up source files..."
 
 ynh_app_setting_set --app=$app --key=final_path --value=$final_path
 # Download, check integrity, uncompress and patch the source from app.src
-git clone $REPOSITORY $final_path --quiet
+
+install -d -o $app -g $app -m 0750 $final_path
+ynh_exec_as $app git clone $REPOSITORY $final_path --quiet
 pushd "$final_path"
-	git checkout $COMMIT --quiet
+	ynh_exec_as $app git checkout $COMMIT --quiet
 popd
 
 chmod 750 "$final_path"
@@ -111,7 +113,7 @@ ynh_add_nginx_config
 ynh_script_progression --message="Building..."
 
 pushd "$final_path"
-	git submodule update --init --recursive
+	ynh_exec_as $app git submodule update --init --recursive
 	ynh_use_nodejs
 	yarn install --pure-lockfile
 	mkdir "$final_path/dist"
diff --git a/scripts/upgrade b/scripts/upgrade
index 1ce4c5b..098b184 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -81,9 +81,9 @@ then
 
 	# Download, check integrity, uncompress and patch the source from app.src
 	pushd "$final_path"
-		git checkout master
-		git pull --quiet
-		git checkout $COMMIT --quiet
+		ynh_exec_as $app git checkout master
+		ynh_exec_as $app git pull --quiet
+		ynh_exec_as $app git checkout $COMMIT --quiet
 	popd
 fi
 
@@ -119,7 +119,7 @@ ynh_install_extra_app_dependencies --repo="deb https://dl.yarnpkg.com/debian/ st
 ynh_script_progression --message="Building..."
 
 pushd "$final_path"
-	git submodule update --init --recursive
+	ynh_exec_as $app git submodule update --init --recursive
 	ynh_use_nodejs
 	yarn install --pure-lockfile
 	$ynh_npm run build