$ git clone -n https://src.fedoraproject.org/rpms/initial-setup.git /var/lib/mock/f40-build-2004681-44981/root/chroot_tmpdir/scmroot/initial-setup
Cloning into '/var/lib/mock/f40-build-2004681-44981/root/chroot_tmpdir/scmroot/initial-setup'...
$ git fetch origin 550612920e92387092db90ffd85866a475ce893a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/initial-setup
 * [new ref]         550612920e92387092db90ffd85866a475ce893a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5506129 Use correct tarball