commit hash of the initial revision

Author: hemanth

README.md

@@ -54,6 +54,7 @@
 * [Archive the `master` branch](https://github.com/git-tips/tips#archive-the-master-branch)
 * [Modify previous commit without modifying the commit message](https://github.com/git-tips/tips#modify-previous-commit-without-modifying-the-commit-message)
 * [Purnes branches that have been deleted in the remote.](https://github.com/git-tips/tips#purnes-branches-that-have-been-deleted-in-the-remote)
+* [Retrieve the commit hash of the initial revision.](https://github.com/git-tips/tips#retrieve-the-commit-hash-of-the-initial-revision)
 
 <!-- Don’t remove or change the comment below – that can break automatic updates. More info at <http://npm.im/doxie.inject>. -->
 <!-- @doxie.inject end toc -->
@@ -383,5 +384,10 @@ __Alternatives:__
 git remote prune origin
 ```
 
+## Retrieve the commit hash of the initial revision.
+```sh
+ git rev-list --reverse HEAD | head -1
+```
+
 <!-- Don’t remove or change the comment below – that can break automatic updates. More info at <http://npm.im/doxie.inject>. -->
 <!-- @doxie.inject end -->

tips.json

@@ -213,5 +213,9 @@
     "title": "Purnes branches that have been deleted in the remote.",
     "tip": "git fetch -p",
     "alternatives":["git remote prune origin"]
+  },
+  {
+    "title": "Retrieve the commit hash of the initial revision.",
+    "tip": " git rev-list --reverse HEAD | head -1"
   }
 ]