[exp/run] Use 'git submodules' to dump git hashes

exp/run

@@ -128,19 +128,14 @@ dump_system() {
     sudo hwloc-distances     >>$system_dir/topology       2>/dev/null
 }
 
-git-hash() {
-    git -C "$1" rev-parse HEAD
-}
-
 dump_versions() {
     msg "# Dumping versions"
 
     local version_dir=$RESULTS_DIR/version
     mkdir -p $version_dir
 
-    git-hash $BENCH_PATH     >>$version_dir/bench     2>/dev/null
-    git-hash $PHOENIX_DIR    >>$version_dir/phoenix   2>/dev/null
-    git-hash $PARSEC_DIR     >>$version_dir/parsec    2>/dev/null
+    git -C $BENCH_PATH rev-parse HEAD >>$version_dir/bench      2>/dev/null
+    git submodule -C $BENCH_PATH      >>$version_dir/submodules 2>/dev/null
 }
 
 dump_args() {