$ git clone -n https://src.fedoraproject.org/rpms/ghc-pipes.git /var/lib/mock/f31-build-54714-28041/root/chroot_tmpdir/scmroot/ghc-pipes
Cloning into '/var/lib/mock/f31-build-54714-28041/root/chroot_tmpdir/scmroot/ghc-pipes'...
$ git reset --hard b3c14808c9bb07517dfd0e56bdcb003bd1c51c00
HEAD is now at b3c1480 add .cabal file