$ git clone -n https://src.fedoraproject.org/rpms/ghc-hourglass.git /var/lib/mock/f31-build-54457-28006/root/chroot_tmpdir/scmroot/ghc-hourglass
Cloning into '/var/lib/mock/f31-build-54457-28006/root/chroot_tmpdir/scmroot/ghc-hourglass'...
$ git reset --hard 684b0d1ac5bdd9f2caa542581b2a7ab61b743e51
HEAD is now at 684b0d1 update to 0.2.12