$ git clone -n https://src.fedoraproject.org/rpms/perl-Net-MQTT-Simple.git /var/lib/mock/f45-build-25331-610/root/chroot_tmpdir/scmroot/perl-Net-MQTT-Simple
Cloning into '/var/lib/mock/f45-build-25331-610/root/chroot_tmpdir/scmroot/perl-Net-MQTT-Simple'...
$ git fetch origin 1ef71068496caebd9d39a2b745c633166baa2181:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Net-MQTT-Simple
 * [new ref]         1ef71068496caebd9d39a2b745c633166baa2181 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1ef7106 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild