$ git clone -n https://src.fedoraproject.org/rpms/ghc-cryptonite.git /var/lib/mock/f31-build-93736-32431/root/chroot_tmpdir/scmroot/ghc-cryptonite
Cloning into '/var/lib/mock/f31-build-93736-32431/root/chroot_tmpdir/scmroot/ghc-cryptonite'...
$ git reset --hard 39d712cac3cc0d3ad6160859cca7bdb5e792f50c
HEAD is now at 39d712c BR prof for lib and static for executable