diff --git a/web_src/js/features/copycontent.ts b/web_src/js/features/copycontent.ts
index af867463b2..554c9b7f47 100644
--- a/web_src/js/features/copycontent.ts
+++ b/web_src/js/features/copycontent.ts
@@ -6,7 +6,11 @@ import {GET} from '../modules/fetch.ts';
 const {i18n} = window.config;
 
 export function initCopyContent() {
-  const btn = document.querySelector('#copy-content');
+  initTargetCopyContent(document);
+}
+
+export function initTargetCopyContent(target: ParentNode) {
+  const btn = target.querySelector('#copy-content');
   if (!btn || btn.classList.contains('disabled')) return;
 
   btn.addEventListener('click', async () => {
diff --git a/web_src/js/features/repo-view-file-tree-sidebar.ts b/web_src/js/features/repo-view-file-tree-sidebar.ts
index b35724e242..ab290b6e85 100644
--- a/web_src/js/features/repo-view-file-tree-sidebar.ts
+++ b/web_src/js/features/repo-view-file-tree-sidebar.ts
@@ -7,6 +7,7 @@ import {initTargetDropdown} from './common-page.ts';
 import {initTargetRepoEllipsisButton} from './repo-commit.ts';
 import {initTargetPdfViewer} from '../render/pdf.ts';
 import {initTargetButtons} from './common-button.ts';
+import {initTargetCopyContent} from './copycontent.ts';
 
 async function toggleSidebar(visibility, isSigned) {
   const sidebarEl = document.querySelector('.repo-view-file-tree-sidebar');
@@ -62,6 +63,7 @@ function reloadContentScript(contentEl: Element) {
   initTargetPdfViewer(contentEl);
   initTargetRepoBranchTagSelector(contentEl);
   initTargetRepoEllipsisButton(contentEl);
+  initTargetCopyContent(contentEl);
 }
 
 export async function initViewFileTreeSidebar() {