Repository home page show error file last commit message.

[lunny]

Compare github's home page
https://github.com/go-gitea/gitea/tree/release/v1.0

vs https://try.gitea.io/gitea/gitea/src/branch/release/v1.0

[ethantkoenig]

Possibly related to go-gitea/git#91. I will investigate as soon as I get the chance.

[lunny]

Repo.cache will be invoked in multiple go routines.

[lunny]

Maybe add a test some commit tree the same as github.

[lunny]

Confirmed release/v1.3 has no this issue.

[lunny]

resolved by #3240