$ git clone -n https://src.fedoraproject.org/rpms/ustr.git /var/lib/mock/f31-build-70733-30535/root/chroot_tmpdir/scmroot/ustr
Cloning into '/var/lib/mock/f31-build-70733-30535/root/chroot_tmpdir/scmroot/ustr'...
$ git reset --hard b40b4fe31d3d956a70af8d02bb237e82d184c65c
HEAD is now at b40b4fe - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild