$ git clone -n https://src.fedoraproject.org/rpms/ghc-constraints.git /var/lib/mock/f41-build-839319-160118/root/chroot_tmpdir/scmroot/ghc-constraints
Cloning into '/var/lib/mock/f41-build-839319-160118/root/chroot_tmpdir/scmroot/ghc-constraints'...
$ git reset --hard e5c5c75a4158df0b9512df6887823b0dd98459e0
HEAD is now at e5c5c75 https://hackage.haskell.org/package/constraints-0.14.2/changelog