$ git clone -n https://src.fedoraproject.org/rpms/R-V8.git /var/lib/mock/f31-build-76479-31418/root/chroot_tmpdir/scmroot/R-V8
Cloning into '/var/lib/mock/f31-build-76479-31418/root/chroot_tmpdir/scmroot/R-V8'...
$ git reset --hard 9045f95313d12d14fad22f18a594439d274840bd
HEAD is now at 9045f95 Update to latest version.