$ git clone -n https://src.fedoraproject.org/rpms/python-orjson.git /var/lib/mock/f45-build-39755-752/root/chroot_tmpdir/scmroot/python-orjson
Cloning into '/var/lib/mock/f45-build-39755-752/root/chroot_tmpdir/scmroot/python-orjson'...
$ git fetch origin 617baeafe6ae5dfb766a795e7deee8f8e6813b6a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-orjson
 * [new ref]         617baeafe6ae5dfb766a795e7deee8f8e6813b6a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 617baea Update to 3.12.0 (close RHBZ#2516116)