$ git clone -n https://src.fedoraproject.org/rpms/python-orjson.git /var/lib/mock/f40-build-783806-133106/root/chroot_tmpdir/scmroot/python-orjson
Cloning into '/var/lib/mock/f40-build-783806-133106/root/chroot_tmpdir/scmroot/python-orjson'...
$ git fetch origin 3fe02c11c6694af2819cefc881171fcb64f7c93a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-orjson
 * [new ref]         3fe02c11c6694af2819cefc881171fcb64f7c93a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3fe02c1 Update to 3.9.13. Fixes rhbz#2262570.