You run git tag -a v3.1 -m "Patch update" xyz999 but get fatal: Not a valid object name xyz999. What is the most probable reason?

medium📝 Troubleshoot Q7 of 15

Git - Tagging

You run git tag -a v3.1 -m "Patch update" xyz999 but get fatal: Not a valid object name xyz999. What is the most probable reason?

AYou forgot to add the <code>-m</code> message flag

BThe commit hash <code>xyz999</code> does not exist in the repository

CThe tag <code>v3.1</code> already exists

DYou need to specify <code>HEAD</code> instead of a commit hash

Step-by-Step Solution

Solution:

Step 1: Analyze the error
The error indicates that xyz999 is not recognized as a valid commit or object.
Step 2: Verify commit existence
If the commit hash does not exist, Git cannot tag it.
Final Answer:
The commit hash xyz999 does not exist in the repository -> Option B
Quick Check:
Invalid commit hash causes this error [OK]

Quick Trick: Check commit hash validity before tagging [OK]

Common Mistakes:

Master "Tagging" in Git

9 interactive learning modes - each teaches the same concept differently

Want More Practice?

15+ quiz questions · All difficulty levels · Free

More Git Quizzes