$ git clone -n https://src.fedoraproject.org/rpms/fastback.git /var/lib/mock/f31-build-66064-29815/root/chroot_tmpdir/scmroot/fastback
Cloning into '/var/lib/mock/f31-build-66064-29815/root/chroot_tmpdir/scmroot/fastback'...
$ git reset --hard 412a45f26bb35ccba42213bb578a64412d4182ce
HEAD is now at 412a45f - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild