$ git clone -n https://src.fedoraproject.org/rpms/stduuid.git /var/lib/mock/f40-build-800544-143605/root/chroot_tmpdir/scmroot/stduuid
Cloning into '/var/lib/mock/f40-build-800544-143605/root/chroot_tmpdir/scmroot/stduuid'...
$ git fetch origin d81e2aaf09916235c5fef130c0f5f14fb4ed3899:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/stduuid
 * [new ref]         d81e2aaf09916235c5fef130c0f5f14fb4ed3899 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d81e2aa Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild