$ git clone -n https://src.fedoraproject.org/rpms/libqb.git /var/lib/mock/f40-build-2211061-52198/root/chroot_tmpdir/scmroot/libqb
Cloning into '/var/lib/mock/f40-build-2211061-52198/root/chroot_tmpdir/scmroot/libqb'...
$ git fetch origin c375332d3e4caf609bb140c6e77867d6c0963757:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libqb
 * [new ref]         c375332d3e4caf609bb140c6e77867d6c0963757 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c375332 Add patch that I mssed out