$ git clone -n https://src.fedoraproject.org/rpms/rust-brotli.git /var/lib/mock/f40-build-2639916-66383/root/chroot_tmpdir/scmroot/rust-brotli
Cloning into '/var/lib/mock/f40-build-2639916-66383/root/chroot_tmpdir/scmroot/rust-brotli'...
$ git fetch origin fe7a65277de033568ead1d27f838b29c936ef010:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-brotli
 * [new ref]         fe7a65277de033568ead1d27f838b29c936ef010 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fe7a652 Update to version 3.5.0; Fixes RHBZ#2269908