$ git clone -n https://src.fedoraproject.org/rpms/NsCDE.git /var/lib/mock/f45-build-39820-761/root/chroot_tmpdir/scmroot/NsCDE
Cloning into '/var/lib/mock/f45-build-39820-761/root/chroot_tmpdir/scmroot/NsCDE'...
$ git fetch origin b4cb84552ed53a10c2a9dcf40598d40cad9c41f1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/NsCDE
 * [new ref]         b4cb84552ed53a10c2a9dcf40598d40cad9c41f1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b4cb845 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild