$ git clone -n https://src.fedoraproject.org/rpms/golang-google-grpc.git /var/lib/mock/f41-build-852552-166397/root/chroot_tmpdir/scmroot/golang-google-grpc
Cloning into '/var/lib/mock/f41-build-852552-166397/root/chroot_tmpdir/scmroot/golang-google-grpc'...
$ git fetch origin aa433d2e1369824a9008eef9133eefcce6bb0a87:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-google-grpc
 * [new ref]         aa433d2e1369824a9008eef9133eefcce6bb0a87 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at aa433d2 Skip failing test