$ git clone -n https://src.fedoraproject.org/rpms/rust-aom-sys.git /var/lib/mock/f40-build-2701470-70437/root/chroot_tmpdir/scmroot/rust-aom-sys
Cloning into '/var/lib/mock/f40-build-2701470-70437/root/chroot_tmpdir/scmroot/rust-aom-sys'...
$ git fetch origin db50b5e973651d8aaeeef5c5e86281d1f5502e1a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-aom-sys
 * [new ref]         db50b5e973651d8aaeeef5c5e86281d1f5502e1a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at db50b5e Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild