$ git clone -n https://src.fedoraproject.org/rpms/ghc-kan-extensions.git /var/lib/mock/f31-build-54495-28014/root/chroot_tmpdir/scmroot/ghc-kan-extensions
Cloning into '/var/lib/mock/f31-build-54495-28014/root/chroot_tmpdir/scmroot/ghc-kan-extensions'...
$ git reset --hard 7639c74dce1528a260c2c087b6931fff50def0a6
HEAD is now at 7639c74 subpackage invariant