$ git clone -n https://src.fedoraproject.org/rpms/xbyak.git /var/lib/mock/f38-build-side-42-init-devel-1125844-30289/root/chroot_tmpdir/scmroot/xbyak
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1125844-30289/root/chroot_tmpdir/scmroot/xbyak'...
$ git fetch origin ac2e0872216594132958ac38bcaf14c5a74d7d6d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/xbyak
 * [new ref]         ac2e0872216594132958ac38bcaf14c5a74d7d6d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ac2e087 Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild