$ git clone -n https://src.fedoraproject.org/rpms/ghc-blaze-builder.git /var/lib/mock/f31-build-99533-33172/root/thebuilddir/tmp/scmroot/ghc-blaze-builder
Cloning into '/var/lib/mock/f31-build-99533-33172/root/thebuilddir/tmp/scmroot/ghc-blaze-builder'...
$ git reset --hard b729362cfb7687756de59d14fe04ea6f26f77af9
HEAD is now at b729362 BR prof for lib and static for executable