diff --git a/clippy_dev/src/sync.rs b/clippy_dev/src/sync.rs
index 982fb757f04b..0f08f143c44a 100644
--- a/clippy_dev/src/sync.rs
+++ b/clippy_dev/src/sync.rs
@@ -63,18 +63,19 @@ fn rustc_version() -> String {
     let version = String::from_utf8(
         process::Command::new("rustc")
             .arg("--version")
+            .arg("--verbose")
             .output()
             .expect("failed to run rustc")
             .stdout,
     )
     .unwrap();
     version
-        .rsplit_once('(')
-        .unwrap()
-        .1
+        .lines()
+        .find(|line| line.starts_with("commit-hash:"))
+        .expect("failed to parse `rustc -vV`")
         .split_whitespace()
-        .next()
-        .expect("failed to get commit from `rustc --version`")
+        .nth(1)
+        .expect("failed to get commit from `rustc -vV`")
         .to_string()
 }