$ git clone -n https://src.fedoraproject.org/rpms/ghc-NumInstances.git /var/lib/mock/f40-build-741932-110424/root/chroot_tmpdir/scmroot/ghc-NumInstances
Cloning into '/var/lib/mock/f40-build-741932-110424/root/chroot_tmpdir/scmroot/ghc-NumInstances'...
$ git reset --hard d7efe696501f2f0afc03c8eb35bd28a82397326b
HEAD is now at d7efe69 bump release