$ git clone -n https://src.fedoraproject.org/rpms/ghc-concurrent-output.git /var/lib/mock/f31-build-99653-33187/root/chroot_tmpdir/scmroot/ghc-concurrent-output
Cloning into '/var/lib/mock/f31-build-99653-33187/root/chroot_tmpdir/scmroot/ghc-concurrent-output'...
$ git reset --hard f436cb3f7dba3b45b0e071bff8362a3da607916b
HEAD is now at f436cb3 BR prof for lib and static for executable