$ git clone -n https://src.fedoraproject.org/rpms/dnsgen.git /var/lib/mock/f39-build-1458712-33080/root/chroot_tmpdir/scmroot/dnsgen
Cloning into '/var/lib/mock/f39-build-1458712-33080/root/chroot_tmpdir/scmroot/dnsgen'...
$ git fetch origin 573a178f2a62f6b9a5a49650cbef20060b7c6e05:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/dnsgen
 * [new ref]         573a178f2a62f6b9a5a49650cbef20060b7c6e05 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 573a178 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild