$ git clone -n https://src.fedoraproject.org/rpms/ghc-math-functions.git /var/lib/mock/f40-build-743021-111037/root/chroot_tmpdir/scmroot/ghc-math-functions
Cloning into '/var/lib/mock/f40-build-743021-111037/root/chroot_tmpdir/scmroot/ghc-math-functions'...
$ git reset --hard e508733a5af86c354c0f57fa344598ec92152bdf
HEAD is now at e508733 test fails with QuickCheck 2.14.3