tweak version (#2954)

[ROCm/composable_kernel commit: a76c7b1028]

python/ck4inductor/__init__.py

@@ -0,0 +1,19 @@
+def __version__():
+    import subprocess
+
+    # needs to be manually updated
+    rocm_version = "7.0.1"
+    hash_width = 6
+    try:
+        hash = subprocess.check_output("git rev-parse HEAD", shell=True, text=True)[
+            :hash_width
+        ]
+    except:
+        hash = "0" * hash_width
+    try:
+        change_count = subprocess.check_output(
+            f"git rev-list rocm-{rocm_version}..HEAD --count", shell=True, text=True
+        ).strip()
+    except:
+        change_count = "0"
+    return f"{rocm_version}.dev{change_count}+g{hash}"