diff --git a/create_release_manifest.py b/create_release_manifest.py
new file mode 100755
index 0000000..7909afb
--- /dev/null
+++ b/create_release_manifest.py
@@ -0,0 +1,28 @@
+#!/usr/bin/python3
+
+import argparse
+import subprocess
+import xml.etree.ElementTree as ET
+
+def main():
+  parser = argparse.ArgumentParser(description='Check out the revisions belonging to a release build.')
+  parser.add_argument('-input', type=str, required=True)
+  parser.add_argument('-output', type=str, required=True)
+  args = parser.parse_args()
+
+  tree = ET.parse(args.input)
+  root = tree.getroot()
+  for project in root.findall('project'):
+    # This repo gives 'fatal: no matching remote head' if you specify a rev.
+    # May be able to remove this when/if we fork the project.
+    if 'aarch64-linux-android' in project.get('path'):
+      continue
+    path = project.get('path')
+    git_output = subprocess.run(['git', '-C', path, 'rev-parse', 'HEAD'], stdout=subprocess.PIPE)
+    revision = git_output.stdout.decode('utf-8').strip()
+    project.set('revision', revision)
+
+  tree.write(args.output)
+
+if __name__ == '__main__':
+  main()
\ No newline at end of file