Steps to reproduce

I have a GitHub action for cloning Flutter to run tests. The test run on various different branches but to save time/space only the branch being tested is cloned (the other branches run in different jobs) using --single-branch.

This used to work fine, but recently has stopped working because Flutter assumes it can access origin/master.

To repro:

1. Run git clone --single-branch --branch beta https://github.com/flutter/flutter to clone the beta branch without all others
2. Run ./flutter_beta/bin/flutter doctor

Expected results

flutter doctor should run successfully.

Actual results

PS D:\Temp> ./flutter_beta/bin/flutter doctor
fatal: Not a valid object name origin/master
Error: Unable to determine engine version...

Code sample

N/A

Screenshots or Video

Logs

PS D:\Temp> ./flutter_beta/bin/flutter doctor -v
fatal: Not a valid object name origin/master
Error: Unable to determine engine version...

Flutter Doctor output

PS D:\Temp> ./flutter_beta/bin/flutter doctor -v
fatal: Not a valid object name origin/master
Error: Unable to determine engine version...