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Git Commit Hash (SHA-1 / SHA-256) Regex
Matches short (7-char) and full (40-char SHA-1) Git commit hashes.
Regular Expression Pattern:
/^[0-9a-fA-F]{7,40}$/
Valid Match Example:
7075d8a
Invalid / Non-Match Example:
git-commit-xyz
Regex Syntax Breakdown & Explanation
- •^[0-9a-fA-F]{7,40}$ : Hexadecimal string between 7 and 40 characters in length.
Implementation in Popular Languages
JavaScript / TypeScript
const regex = /^[0-9a-fA-F]{7,40}$/;
const isValid = regex.test("7075d8a");
console.log(isValid); // truePython (re)
import re
pattern = r"^[0-9a-fA-F]{7,40}$"
match = re.match(pattern, "7075d8a")
print(bool(match)) # TrueGo (regexp)
package main
import (
"fmt"
"regexp"
)
func main() {
re := regexp.MustCompile(`^[0-9a-fA-F]{7,40}$`)
fmt.Println(re.MatchString("7075d8a"))
}Frequently Asked Questions
Frequently Asked Questions
Everything you need to know regarding specifications, syntax, and security best practices.
The regular expression pattern is /^[0-9a-fA-F]{7,40}$/. Matches short (7-char) and full (40-char SHA-1) Git commit hashes.