$ git clone -n https://src.fedoraproject.org/rpms/ghc-url.git /var/lib/mock/f31-build-101384-33386/root/chroot_tmpdir/scmroot/ghc-url
Cloning into '/var/lib/mock/f31-build-101384-33386/root/chroot_tmpdir/scmroot/ghc-url'...
$ git reset --hard 3ad67d28f72a4d04097626bb9f8393feda69f290
HEAD is now at 3ad67d2 BR prof for lib and static for executable