$ git clone -n https://src.fedoraproject.org/rpms/ghc-stringbuilder.git /var/lib/mock/f31-build-117015-34599/root/chroot_tmpdir/scmroot/ghc-stringbuilder
Cloning into '/var/lib/mock/f31-build-117015-34599/root/chroot_tmpdir/scmroot/ghc-stringbuilder'...
$ git reset --hard cb98ff278346b54ccd0e120ff5c7a8f1d1dd8cd4
HEAD is now at cb98ff2 BR prof for lib and static for executable