$ git clone -n https://src.fedoraproject.org/rpms/wmctrl.git /var/lib/mock/f45-build-38447-724/root/chroot_tmpdir/scmroot/wmctrl
Cloning into '/var/lib/mock/f45-build-38447-724/root/chroot_tmpdir/scmroot/wmctrl'...
$ git fetch origin 77b5b8599c25240a8343d3c272e807ab1ea7c347:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/wmctrl
 * [new ref]         77b5b8599c25240a8343d3c272e807ab1ea7c347 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 77b5b85 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild