.

xtask/src/main.rs

@@ -17,7 +17,7 @@ use xtask::{
     install::{ClientOpt, InstallCmd, ServerOpt},
     not_bash::pushd,
     pre_commit, project_root,
-    release::ReleaseCmd,
+    release::{PromoteCmd, ReleaseCmd},
     run_clippy, run_fuzzer, run_pre_cache, run_rustfmt, Result,
 };
 
@@ -105,6 +105,11 @@ FLAGS:
             args.finish()?;
             ReleaseCmd { dry_run }.run()
         }
+        "promote" => {
+            let dry_run = args.contains("--dry-run");
+            args.finish()?;
+            PromoteCmd { dry_run }.run()
+        }
         "dist" => {
             let nightly = args.contains("--nightly");
             let client_version: Option<String> = args.opt_value_from_str("--client")?;

xtask/src/release.rs

@@ -69,3 +69,16 @@ Release: release:{}[]
         Ok(())
     }
 }
+
+pub struct PromoteCmd {
+    pub dry_run: bool,
+}
+
+impl PromoteCmd {
+    pub fn run(self) -> Result<()> {
+        run!("git switch release")?;
+        run!("git fetch upstream")?;
+        run!("git reset --hard upstream/release")?;
+        Ok(())
+    }
+}