diff --git a/act/common/git/git.go b/act/common/git/git.go
index 1748e797..bffe4feb 100644
--- a/act/common/git/git.go
+++ b/act/common/git/git.go
@@ -340,7 +340,7 @@ func NewGitCloneExecutor(input NewGitCloneExecutorInput) common.Executor {
 			logger.Errorf("Unable to resolve %s: %v", input.Ref, err)
 		}
 
-		if hash.String() != input.Ref && strings.HasPrefix(hash.String(), input.Ref) {
+		if hash.String() != input.Ref && len(input.Ref) >= 4 && strings.HasPrefix(hash.String(), input.Ref) {
 			return &Error{
 				err:    ErrShortRef,
 				commit: hash.String(),