$ git clone -n https://src.fedoraproject.org/rpms/golang-cloud-google-compute.git /var/lib/mock/f40-build-2213923-52339/root/chroot_tmpdir/scmroot/golang-cloud-google-compute
Cloning into '/var/lib/mock/f40-build-2213923-52339/root/chroot_tmpdir/scmroot/golang-cloud-google-compute'...
$ git fetch origin 22acb3d8f02edf0b41d8b0b12c79888a2426371e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-cloud-google-compute
 * [new ref]         22acb3d8f02edf0b41d8b0b12c79888a2426371e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 22acb3d Skip tests requiring auth