$ git clone -n https://src.fedoraproject.org/rpms/dl-fedora.git /var/lib/mock/f40-build-2276734-55181/root/chroot_tmpdir/scmroot/dl-fedora
Cloning into '/var/lib/mock/f40-build-2276734-55181/root/chroot_tmpdir/scmroot/dl-fedora'...
$ git fetch origin c789f6b5e62f8c97dea3b7ede5fc1b4c9356da57:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/dl-fedora
 * [new ref]         c789f6b5e62f8c97dea3b7ede5fc1b4c9356da57 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c789f6b Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild