$ git clone -n https://src.fedoraproject.org/rpms/ghc-aeson-better-errors.git /var/lib/mock/f41-build-842696-161699/root/chroot_tmpdir/scmroot/ghc-aeson-better-errors
Cloning into '/var/lib/mock/f41-build-842696-161699/root/chroot_tmpdir/scmroot/ghc-aeson-better-errors'...
$ git reset --hard 7aaa04835973a92cfbb77f6e51c09ecea352c5f0
HEAD is now at 7aaa048 patch for mtl-2.3