$ git clone -n https://src.fedoraproject.org/rpms/mqtt-randompub.git /var/lib/mock/f40-build-2012061-45766/root/chroot_tmpdir/scmroot/mqtt-randompub
Cloning into '/var/lib/mock/f40-build-2012061-45766/root/chroot_tmpdir/scmroot/mqtt-randompub'...
$ git fetch origin 30ab9073152e051e31a72ff819d21c9423f2ec01:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mqtt-randompub
 * [new ref]         30ab9073152e051e31a72ff819d21c9423f2ec01 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 30ab907 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild