$ git clone -n https://src.fedoraproject.org/rpms/fdr.git /var/lib/mock/f40-build-1996216-43990/root/chroot_tmpdir/scmroot/fdr
Cloning into '/var/lib/mock/f40-build-1996216-43990/root/chroot_tmpdir/scmroot/fdr'...
$ git fetch origin 190f8e2f40c0524f35c0ef3f1c2743ff43548d62:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/fdr
 * [new ref]         190f8e2f40c0524f35c0ef3f1c2743ff43548d62 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 190f8e2 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild