$ git clone -n https://src.fedoraproject.org/rpms/deco-archive.git /var/lib/mock/f40-build-1994031-43760/root/chroot_tmpdir/scmroot/deco-archive
Cloning into '/var/lib/mock/f40-build-1994031-43760/root/chroot_tmpdir/scmroot/deco-archive'...
$ git fetch origin 2be763ae3415997d8ac2ab1273364fe4599d78ec:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/deco-archive
 * [new ref]         2be763ae3415997d8ac2ab1273364fe4599d78ec -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2be763a Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild