$ git clone -n https://src.fedoraproject.org/rpms/ghc-math-functions.git /var/lib/mock/f33-build-140107-42445/root/chroot_tmpdir/scmroot/ghc-math-functions
Cloning into '/var/lib/mock/f33-build-140107-42445/root/chroot_tmpdir/scmroot/ghc-math-functions'...
$ git reset --hard 05d040256d0eb4afb917c4676ad6a191fea1d3f4
HEAD is now at 05d0402 update to 0.3.3.0