$ git clone -n https://src.fedoraproject.org/rpms/mach.git /var/lib/mock/f31-build-85724-31620/root/chroot_tmpdir/scmroot/mach
Cloning into '/var/lib/mock/f31-build-85724-31620/root/chroot_tmpdir/scmroot/mach'...
$ git reset --hard c6cf3ca370a36803d6587c6eee543a9a6a189b5f
HEAD is now at c6cf3ca - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild