$ git clone -n https://src.fedoraproject.org/rpms/ghc-kan-extensions.git /var/lib/mock/f31-build-111955-34236/root/chroot_tmpdir/scmroot/ghc-kan-extensions
Cloning into '/var/lib/mock/f31-build-111955-34236/root/chroot_tmpdir/scmroot/ghc-kan-extensions'...
$ git reset --hard 47d9c40262429ed64ecdb58343f0ae8b77ca3289
HEAD is now at 47d9c40 BR prof for lib and static for executable