ci: Ensure sccache hits for worktrees

Author: CSRessel

codex-rs/.cargo/config.toml

@@ -3,3 +3,7 @@ rustflags = ["-C", "link-arg=/STACK:8388608"]
 
 [target.'cfg(all(windows, target_env = "gnu"))']
 rustflags = ["-C", "link-arg=-Wl,--stack,8388608"]
+
+[build]
+# Remap the workspace path to a static string so hashes match across worktrees
+rustflags = ["--remap-path-prefix", "$CARGO_MANIFEST_DIR=."]