diff --git a/README.md b/README.md
index 0ddf0f2..e3a01e4 100644
--- a/README.md
+++ b/README.md
@@ -545,6 +545,22 @@ git remote prune origin
  git rev-list --reverse HEAD | head -1
 ```
 
+
+__Alternatives:__
+```sh
+git rev-list --max-parents=0 HEAD
+```
+
+
+```sh
+git log --pretty=oneline | tail -1 | cut -c 1-40
+```
+
+
+```sh
+git log --pretty=oneline --reverse | head -1 | cut -c 1-40
+```
+
 ## Visualize the version tree.
 ```sh
 git log --pretty=oneline --graph --decorate --all
diff --git a/tips.json b/tips.json
index dfc4bde..09c3595 100644
--- a/tips.json
+++ b/tips.json
@@ -197,7 +197,8 @@
     "alternatives": ["git remote prune origin"]
 }, {
     "title": "Retrieve the commit hash of the initial revision.",
-    "tip": " git rev-list --reverse HEAD | head -1"
+    "tip": " git rev-list --reverse HEAD | head -1",
+    "alternatives": ["git rev-list --max-parents=0 HEAD", "git log --pretty=oneline | tail -1 | cut -c 1-40", "git log --pretty=oneline --reverse | head -1 | cut -c 1-40"]
 }, {
     "title": "Visualize the version tree.",
     "tip": "git log --pretty=oneline --graph --decorate --all",