$ git clone -n https://src.fedoraproject.org/rpms/libmatchbox.git /var/lib/mock/f40-build-2294582-56282/root/chroot_tmpdir/scmroot/libmatchbox
Cloning into '/var/lib/mock/f40-build-2294582-56282/root/chroot_tmpdir/scmroot/libmatchbox'...
$ git fetch origin b06042d8dc994728ff6e1ba94f2d4e62736fd73e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libmatchbox
 * [new ref]         b06042d8dc994728ff6e1ba94f2d4e62736fd73e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b06042d Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild