$ git clone -n https://src.fedoraproject.org/rpms/ghc-path-pieces.git /var/lib/mock/f31-build-94485-32493/root/chroot_tmpdir/scmroot/ghc-path-pieces
Cloning into '/var/lib/mock/f31-build-94485-32493/root/chroot_tmpdir/scmroot/ghc-path-pieces'...
$ git reset --hard bcfe42cd5703f6d8fba15c97f5171086fdc6a19a
HEAD is now at bcfe42c BR prof for lib and static for executable