$ git clone -n https://src.fedoraproject.org/rpms/gbrainy.git /var/lib/mock/f40-build-2292399-56131/root/chroot_tmpdir/scmroot/gbrainy
Cloning into '/var/lib/mock/f40-build-2292399-56131/root/chroot_tmpdir/scmroot/gbrainy'...
$ git fetch origin a2e5fd1824d2352c87881d7567f9b4fa389d4012:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gbrainy
 * [new ref]         a2e5fd1824d2352c87881d7567f9b4fa389d4012 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a2e5fd1 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild