$ git clone -n https://src.fedoraproject.org/rpms/dxvk-native.git /var/lib/mock/f40-build-791222-137270/root/chroot_tmpdir/scmroot/dxvk-native
Cloning into '/var/lib/mock/f40-build-791222-137270/root/chroot_tmpdir/scmroot/dxvk-native'...
$ git fetch origin f6c7475254f9a316e561fd674cdeba9f444937b1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/dxvk-native
 * [new ref]         f6c7475254f9a316e561fd674cdeba9f444937b1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f6c7475 Minor fixups