$ git clone -n https://src.fedoraproject.org/rpms/nsd.git /var/lib/mock/f39-build-1491881-34523/root/chroot_tmpdir/scmroot/nsd
Cloning into '/var/lib/mock/f39-build-1491881-34523/root/chroot_tmpdir/scmroot/nsd'...
$ git fetch origin ab25a40ace8543b0c659f17dba0d356b595742e1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/nsd
 * [new ref]         ab25a40ace8543b0c659f17dba0d356b595742e1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ab25a40 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild