$ git clone -n https://src.fedoraproject.org/rpms/mirage.git /var/lib/mock/f31-build-56022-28173/root/chroot_tmpdir/scmroot/mirage
Cloning into '/var/lib/mock/f31-build-56022-28173/root/chroot_tmpdir/scmroot/mirage'...
$ git reset --hard f926b4013b90748d18be2b1434508c5bf969e0ce
HEAD is now at f926b40 - Rebuilt for https://fedoraproject.org/wiki/Fedora_30_Mass_Rebuild