Potential fix for pull request finding

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

Author: severo

src/lib/sources/gitHubSource.ts

@@ -109,7 +109,7 @@ export function getGitHubSource(sourceId: string, options?: {requestInit?: Reque
       return {
         label: 'Branches',
         versions: branches.map((branch) => {
-          const branchSourceId = `${url.origin}/${url.repo}/${url.kind === 'file' ? 'blob' : 'tree'}/${branch}${url.path}`
+          const branchSourceId = `${baseUrl}/${url.repo}/${url.kind === 'file' ? 'blob' : 'tree'}/${branch}${url.path}`
           return {
             label: branch,
             sourceId: branchSourceId,