Fixes missing sha

CHANGELOG.md

@@ -7,6 +7,7 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/) and this p
 ## [Unreleased]
 ### Fixed
 - Fixes issue where [Gravatars](https://en.gravatar.com/) in the gutter blame annotations weren't restored on tab switch
+- Fixes issue where the id (sha) was missing in the hover blame annotations for uncommitted changes
 
 ## [7.5.3] - 2018-01-15
 ### Fixed

src/annotations/annotations.ts

@@ -86,7 +86,7 @@ export class Annotations {
             message = `\n\n> ${message}`;
         }
         else {
-            showCommitDetailsCommand = `\`${commit.shortSha}\``;
+            showCommitDetailsCommand = `\`${commit.shortSha || '00000000'}\``;
         }
 
         const markdown = new MarkdownString(`${showCommitDetailsCommand}   ![](${commit.getGravatarUri(Container.config.defaultGravatarsStyle).toString()})  __${commit.author}__, ${commit.fromNow()}   _(${commit.formatDate(dateFormat)})_ ${message}${commandBar}`);