$ git clone -n https://src.fedoraproject.org/rpms/ghc-yesod.git /var/lib/mock/f31-build-117102-34599/root/chroot_tmpdir/scmroot/ghc-yesod
Cloning into '/var/lib/mock/f31-build-117102-34599/root/chroot_tmpdir/scmroot/ghc-yesod'...
$ git reset --hard 8ef998d828bbc1c9feed4fdfa9c5a9e35b13b748
HEAD is now at 8ef998d BR prof for lib and static for executable