$ git clone -n https://src.fedoraproject.org/rpms/ghc-stringbuilder.git /var/lib/mock/f33-build-289183-54276/root/chroot_tmpdir/scmroot/ghc-stringbuilder
Cloning into '/var/lib/mock/f33-build-289183-54276/root/chroot_tmpdir/scmroot/ghc-stringbuilder'...
$ git reset --hard 821fadc61f06b430bc601efde267ab96e26e163e
HEAD is now at 821fadc - Second attempt - Rebuilt for https://fedoraproject.org/wiki/Fedora_33_Mass_Rebuild