$ git clone -n https://src.fedoraproject.org/rpms/ghc-tf-random.git /var/lib/mock/f45-build-10846-424/root/chroot_tmpdir/scmroot/ghc-tf-random
Cloning into '/var/lib/mock/f45-build-10846-424/root/chroot_tmpdir/scmroot/ghc-tf-random'...
$ git fetch origin 14c14a351f0e38d54f92b5ba509ed42eb65d3d85:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-tf-random
 * [new ref]         14c14a351f0e38d54f92b5ba509ed42eb65d3d85 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 14c14a3 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild