gitlab runner 执行的时候有时候会出现fatal: http://gitlab-ci-token:xxxxxxxxxxxxxxxxxxxx@gitlab.XXXX.com/team/CommentService.git/info/refs not valid: is this a git repository?

Running with gitlab-runner 10.8.0 (079aad9e)
on docker 615a3b5e
Using Docker executor with image microsoft/dotnet:2.1-sdk ...
Pulling docker image microsoft/dotnet:2.1-sdk ...
Using docker image
sha256:f6d6062f4612fd10c4121f66b8ffdbee70053bb63668b045816ffce42d4d59c3 for microsoft/dotnet:2.1-sdk ...
Running on runner-615a3b5e-project-39-concurrent-0 via ad9914326085...
Fetching changes...
HEAD is now at 39a04dc Update sources.props
fatal: http://gitlab-ci-token:xxxxxxxxxxxxxxxxxxxx@gitlab.xxxx.com/team/CommentService.git/info/refs not valid: is this a git repository?
ERROR: Job failed: exit code 1

请问这种问题怎么解决？