$ git clone -n https://src.fedoraproject.org/rpms/ghc-call-stack.git /var/lib/mock/f33-build-167199-43510/root/chroot_tmpdir/scmroot/ghc-call-stack
Cloning into '/var/lib/mock/f33-build-167199-43510/root/chroot_tmpdir/scmroot/ghc-call-stack'...
$ git reset --hard 1a20ef47d009b2e5c93da71ffe93cfc6176720d2
HEAD is now at 1a20ef4 - Rebuilt for https://fedoraproject.org/wiki/Fedora_32_Mass_Rebuild