$ git clone -n https://src.fedoraproject.org/rpms/dl-fedora.git /var/lib/mock/f40-build-792862-138672/root/chroot_tmpdir/scmroot/dl-fedora
Cloning into '/var/lib/mock/f40-build-792862-138672/root/chroot_tmpdir/scmroot/dl-fedora'...
$ git fetch origin 61a52f6bf572b1fbd561a41f42c3ab39ace69c71:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/dl-fedora
 * [new ref]         61a52f6bf572b1fbd561a41f42c3ab39ace69c71 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 61a52f6 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild