$ git clone -n https://src.fedoraproject.org/rpms/boost.git /var/lib/mock/f31-build-75565-31305/root/chroot_tmpdir/scmroot/boost
Cloning into '/var/lib/mock/f31-build-75565-31305/root/chroot_tmpdir/scmroot/boost'...
$ git reset --hard f5c0d413a7827d1531ae8b80f6fa30bb79813f39
HEAD is now at f5c0d41 - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild