improve force push detect when push (#2798)

diff --git a/cmd/hook.go b/cmd/hook.go
index 0ddbb36f901180951dbd6f20cb796d5c782a3a14..9d805e4ef5edc8b82ddbc26be1bd2cf05cb7e9fa 100644 (file)
--- a/cmd/hook.go
+++ b/cmd/hook.go
@@ -118,7 +118,7 @@ func runHookPreReceive(c *cli.Context) error {
                if protectBranch != nil && protectBranch.IsProtected() {
                        // detect force push
                        if git.EmptySHA != oldCommitID {
-                               output, err := git.NewCommand("rev-list", oldCommitID, "^"+newCommitID).RunInDir(repoPath)
+                               output, err := git.NewCommand("rev-list", "--max-count=1", oldCommitID, "^"+newCommitID).RunInDir(repoPath)
                                if err != nil {
                                        fail("Internal error", "Fail to detect force push: %v", err)
                                } else if len(output) > 0 {