Handle git remotes that aren't called origin in _repository_name()

I was seeing `error: No such remote 'origin'` in the cmake output.
This commit avoids hardcoding `origin` as the upstream URL and instead
uses the `git rev-parse @{u}` to get the configured upstream.

As a follow-up we may want to check if this should be executed by default,
but for now this fixes a warning that I'm seeing with various projects.

1 files changed, 3 insertions, 1 deletions

diff --git a/toolchain/generate-fastlane-metadata.py b/toolchain/generate-fastlane-metadata.py
index f39acc3a..642a76d3 100755
--- a/toolchain/generate-fastlane-metadata.py
+++ b/toolchain/generate-fastlane-metadata.py
@@ -339,7 +339,9 @@ def processAppstreamFile(appstreamFileName, desktopFileName, iconBaseName):
 
     # Try to figure out the source repository
     if arguments.source and os.path.exists(os.path.join(arguments.source, '.git')):
-        output = subprocess.check_output('git remote show -n origin', shell=True, cwd = arguments.source).decode('utf-8')
+        upstream_ref = subprocess.check_output(['git', 'rev-parse', '--symbolic-full-name', '@{u}'], cwd=arguments.source).decode('utf-8')
+        remote = upstream_ref.split('/')[2]
+        output = subprocess.check_output(['git', 'remote', 'show', '-n', remote], cwd=arguments.source).decode('utf-8')
         result = re.search(' Fetch URL: (.*)\n', output)
         data['source-repo'] = result.group(1)