$ git clone -n https://src.fedoraproject.org/rpms/python-canonicaljson.git /var/lib/mock/f39-build-1590458-38249/root/chroot_tmpdir/scmroot/python-canonicaljson
Cloning into '/var/lib/mock/f39-build-1590458-38249/root/chroot_tmpdir/scmroot/python-canonicaljson'...
$ git fetch origin b185b9bec369bf45b3ae24df782ad7b270dae267:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-canonicaljson
 * [new ref]         b185b9bec369bf45b3ae24df782ad7b270dae267 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b185b9b Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild