Fix for open changes action (#2363)

Author: osortega

src/extension/chatSessions/vscode-node/pullRequestFileChangesService.ts

@@ -32,13 +32,21 @@ export class PullRequestFileChangesService implements IPullRequestFileChangesSer
 		try {
 			this.logService.trace(`Getting file changes for PR #${pullRequest.number}`);
 			const repoId = await getRepoId(this._gitService);
-			if (!repoId) {
+			let repoName, repoOwner = undefined;
+			if (repoId) {
+				repoName = repoId.repo;
+				repoOwner = repoId.org;
+			} else {
+				repoOwner = pullRequest.repository.owner.login;
+				repoName = pullRequest.repository.name;
+			}
+			if (!repoName || !repoOwner) {
 				this.logService.warn('No repo ID available for fetching PR file changes');
 				return undefined;
 			}
 
-			this.logService.trace(`Fetching PR files from ${repoId.org}/${repoId.repo} for PR #${pullRequest.number}`);
-			const files = await this._octoKitService.getPullRequestFiles(repoId.org, repoId.repo, pullRequest.number);
+			this.logService.trace(`Fetching PR files from ${repoOwner}/${repoName} for PR #${pullRequest.number}`);
+			const files = await this._octoKitService.getPullRequestFiles(repoOwner, repoName, pullRequest.number);
 			this.logService.trace(`Got ${files?.length || 0} files from API`);
 
 			if (!files || files.length === 0) {
@@ -62,8 +70,8 @@ export class PullRequestFileChangesService implements IPullRequestFileChangesSer
 				const originalUri = toPRContentUri(
 					file.previous_filename || file.filename,
 					{
-						owner: repoId.org,
-						repo: repoId.repo,
+						owner: repoOwner,
+						repo: repoName,
 						prNumber: pullRequest.number,
 						commitSha: pullRequest.baseRefOid,
 						isBase: true,
@@ -75,8 +83,8 @@ export class PullRequestFileChangesService implements IPullRequestFileChangesSer
 				const modifiedUri = toPRContentUri(
 					file.filename,
 					{
-						owner: repoId.org,
-						repo: repoId.repo,
+						owner: repoOwner,
+						repo: repoName,
 						prNumber: pullRequest.number,
 						commitSha: pullRequest.headRefOid,
 						isBase: false,