$ git clone -n https://src.fedoraproject.org/rpms/dav1d.git /var/lib/mock/f39-build-1457924-33025/root/chroot_tmpdir/scmroot/dav1d
Cloning into '/var/lib/mock/f39-build-1457924-33025/root/chroot_tmpdir/scmroot/dav1d'...
$ git fetch origin 1bd20cd3290b35c674f08e12afa29e2f0e251c4c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/dav1d
 * [new ref]         1bd20cd3290b35c674f08e12afa29e2f0e251c4c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1bd20cd Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild