$ git clone -n https://src.fedoraproject.org/rpms/ghc-vector-builder.git /var/lib/mock/f31-build-112619-34295/root/chroot_tmpdir/scmroot/ghc-vector-builder
Cloning into '/var/lib/mock/f31-build-112619-34295/root/chroot_tmpdir/scmroot/ghc-vector-builder'...
$ git reset --hard 22458943d6a3d6b025c467b5b359bc59582296cc
HEAD is now at 2245894 BR prof for lib and static for executable