diff --git a/packages/plugin-github/src/events.ts b/packages/plugin-github/src/events.ts
index 7d27cb75ce..bd9a6689e8 100644
--- a/packages/plugin-github/src/events.ts
+++ b/packages/plugin-github/src/events.ts
@@ -103,12 +103,15 @@ export function addListeners(on: <T extends EventNames.All>(event: T, handler: E
   })
 
   on('pull_request.opened', ({ repository, pull_request }) => {
-    const { full_name } = repository
+    const { full_name, owner } = repository
     const { user, html_url, issue_url, comments_url, base, head, body, number } = pull_request
     if (user.type === 'bot') return
 
+    const prefix = new RegExp(`^${owner.login}:`)
+    const baseLabel = base.label.replace(prefix, '')
+    const headLabel = head.label.replace(prefix, '')
     return [[
-      `[GitHub] ${user.login} opened a pull request ${full_name}#${number} (${base.label} <- ${head.label})`,
+      `[GitHub] ${user.login} opened a pull request ${full_name}#${number} (${baseLabel} <- ${headLabel})`,
       formatMarkdown(body),
     ].join('\n'), {
       link: html_url,
diff --git a/packages/plugin-github/tests/index.snap.js b/packages/plugin-github/tests/index.snap.js
index d16a678a00..fe285f55c5 100644
--- a/packages/plugin-github/tests/index.snap.js
+++ b/packages/plugin-github/tests/index.snap.js
@@ -25,12 +25,12 @@ Ich verstecke Englisch und Chinesisch nicht! Gab es Personen, die mir helfen kan
 
 // URL: https://github.com/koishijs/koishi/pull/20
 module.exports[`pull_request.opened.1`] = `
-[GitHub] simon300000 opened a pull request koishijs/koishi#20 (koishijs:develop <- koishijs:experimental)
+[GitHub] simon300000 opened a pull request koishijs/koishi#20 (develop <- experimental)
 Das ist wichtig!`
 
 // URL: https://github.com/koishijs/koishi/pull/90
 module.exports[`pull_request.opened.2`] = `
-[GitHub] jjyyxx opened a pull request koishijs/koishi#90 (koishijs:mapping <- jjyyxx:mapping)
+[GitHub] jjyyxx opened a pull request koishijs/koishi#90 (mapping <- jjyyxx:mapping)
 According to \`tsconfig-paths\` documentation ...`
 
 // URL: https://github.com/koishijs/koishi/pull/20#pullrequestreview-345349537