$ git clone -n https://src.fedoraproject.org/rpms/isomaster.git /var/lib/mock/f31-build-110830-34076/root/chroot_tmpdir/scmroot/isomaster
Cloning into '/var/lib/mock/f31-build-110830-34076/root/chroot_tmpdir/scmroot/isomaster'...
$ git reset --hard 256a66e2e4a1916612464dae380b3eaca6ae81bc
HEAD is now at 256a66e - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild