$ git clone -n https://src.fedoraproject.org/rpms/douceur.git /var/lib/mock/f38-build-side-42-init-devel-938151-28757/root/chroot_tmpdir/scmroot/douceur
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-938151-28757/root/chroot_tmpdir/scmroot/douceur'...
$ git fetch origin b1f35ec6577b49a1d54941f42fd78eb784e1d67e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/douceur
 * [new ref]         b1f35ec6577b49a1d54941f42fd78eb784e1d67e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b1f35ec Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild