$ git clone -n https://src.fedoraproject.org/rpms/gap-pkg-datastructures.git /var/lib/mock/f40-build-2278805-55286/root/chroot_tmpdir/scmroot/gap-pkg-datastructures
Cloning into '/var/lib/mock/f40-build-2278805-55286/root/chroot_tmpdir/scmroot/gap-pkg-datastructures'...
$ git fetch origin f9d9973c785e478b229ca3833d633cb76b29bdb5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gap-pkg-datastructures
 * [new ref]         f9d9973c785e478b229ca3833d633cb76b29bdb5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f9d9973 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild