$ git clone -n https://src.fedoraproject.org/rpms/AGReader.git /var/lib/mock/f40-build-800828-143643/root/chroot_tmpdir/scmroot/AGReader
Cloning into '/var/lib/mock/f40-build-800828-143643/root/chroot_tmpdir/scmroot/AGReader'...
$ git fetch origin b2e2a3de0d27c5085f05b5878f0ac63e36cdacd2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/AGReader
 * [new ref]         b2e2a3de0d27c5085f05b5878f0ac63e36cdacd2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b2e2a3d Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild