$ git clone -n https://src.fedoraproject.org/rpms/ostree.git /var/lib/mock/f31-build-66505-29890/root/chroot_tmpdir/scmroot/ostree
Cloning into '/var/lib/mock/f31-build-66505-29890/root/chroot_tmpdir/scmroot/ostree'...
$ git reset --hard 6b0371b74c975e67c76cae998bf11ae64179b977
HEAD is now at 6b0371b - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild