$ git clone -n https://src.fedoraproject.org/rpms/gap-pkg-laguna.git /var/lib/mock/f40-build-2278945-55297/root/chroot_tmpdir/scmroot/gap-pkg-laguna
Cloning into '/var/lib/mock/f40-build-2278945-55297/root/chroot_tmpdir/scmroot/gap-pkg-laguna'...
$ git fetch origin 821e65c43f623981509bc398207e2a05b0a241a9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gap-pkg-laguna
 * [new ref]         821e65c43f623981509bc398207e2a05b0a241a9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 821e65c Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild