$ git clone -n https://src.fedoraproject.org/rpms/libqb.git /var/lib/mock/f45-build-16797-491/root/chroot_tmpdir/scmroot/libqb
Cloning into '/var/lib/mock/f45-build-16797-491/root/chroot_tmpdir/scmroot/libqb'...
$ git fetch origin 951de568102360233ce8cf739fc4c6fcf8cdad53:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libqb
 * [new ref]         951de568102360233ce8cf739fc4c6fcf8cdad53 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 951de56 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild