$ git clone -n https://src.fedoraproject.org/rpms/golang-k8s-apiserver.git /var/lib/mock/f41-build-1311791-23509/root/chroot_tmpdir/scmroot/golang-k8s-apiserver
Cloning into '/var/lib/mock/f41-build-1311791-23509/root/chroot_tmpdir/scmroot/golang-k8s-apiserver'...
$ git fetch origin 5306bf9844e5b642811683c8d97c2d33fc823d81:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-k8s-apiserver
 * [new ref]         5306bf9844e5b642811683c8d97c2d33fc823d81 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5306bf9 Fix FTBFS