$ git clone -n https://src.fedoraproject.org/rpms/gap-pkg-singular.git /var/lib/mock/f40-build-2279041-55305/root/chroot_tmpdir/scmroot/gap-pkg-singular
Cloning into '/var/lib/mock/f40-build-2279041-55305/root/chroot_tmpdir/scmroot/gap-pkg-singular'...
$ git fetch origin 89661dc625a306bd6853f81e00ad7c38884c66a9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gap-pkg-singular
 * [new ref]         89661dc625a306bd6853f81e00ad7c38884c66a9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 89661dc Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild