$ git clone -n https://src.fedoraproject.org/rpms/mairix.git /var/lib/mock/f31-build-49844-27355/root/chroot_tmpdir/scmroot/mairix
Cloning into '/var/lib/mock/f31-build-49844-27355/root/chroot_tmpdir/scmroot/mairix'...
$ git reset --hard dd31ecf8845960010e799126574a20c816b4ee22
HEAD is now at dd31ecf - Rebuilt for https://fedoraproject.org/wiki/Fedora_30_Mass_Rebuild