$ git clone -n https://src.fedoraproject.org/rpms/dav1d.git /var/lib/mock/f40-build-2284256-55627/root/chroot_tmpdir/scmroot/dav1d
Cloning into '/var/lib/mock/f40-build-2284256-55627/root/chroot_tmpdir/scmroot/dav1d'...
$ git fetch origin 7aa9e6a3e515a5c52e72639449149546c9ca380b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/dav1d
 * [new ref]         7aa9e6a3e515a5c52e72639449149546c9ca380b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7aa9e6a Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild