The F-Droid page for any app has a Links section under the app description. Expand that, and the Source Code link is usually the GitHub (or whatever) link you want for the app.
As for update notifications, you set the “Update Checking Interval” in the Obtainium settings (default is every 6 hours). So whenever a new APK gets added to an app’s GitHub, Obtainium will notify you of it the next time it scans for updates.
The F-Droid page for any app has a Links section under the app description. Expand that, and the Source Code link is usually the GitHub (or whatever) link you want for the app.
As for update notifications, you set the “Update Checking Interval” in the Obtainium settings (default is every 6 hours). So whenever a new APK gets added to an app’s GitHub, Obtainium will notify you of it the next time it scans for updates.