alt Hacker News>The Android kernel source code is in git: https://android.googlesource.com/kernel/common/
That's the mainline kernel. Actual devices use various LTS kernels, for instance the pixel 9a uses kernel 6.1[1], which was hasn't been updated in a year[2]
[1] https://wiki.lineageos.org/devices/tegu/
[2] https://android.googlesource.com/device/google/tegu-kernels/...
There are other kernel 6.1 branches there, e.g. https://android.googlesource.com/kernel/common/+/refs/heads/...
I'm not sure which one the latest update for the Pixel 9a is using, I have an older Pixel 8. When I look at the Settings -> Android Version I can see it's using a build from January 2026 (also 6.1).