$ git clone -n https://src.fedoraproject.org/rpms/crystal-stacker.git /var/lib/mock/f31-build-57898-28390/root/chroot_tmpdir/scmroot/crystal-stacker
Cloning into '/var/lib/mock/f31-build-57898-28390/root/chroot_tmpdir/scmroot/crystal-stacker'...
$ git reset --hard 17094314b1627c6aab43c15a67690b75a128ff3f
HEAD is now at 1709431 - Rebuilt for https://fedoraproject.org/wiki/Fedora_30_Mass_Rebuild