$ git clone -n https://src.fedoraproject.org/rpms/jakarta-json.git /var/lib/mock/f40-build-2599755-63067/root/chroot_tmpdir/scmroot/jakarta-json
Cloning into '/var/lib/mock/f40-build-2599755-63067/root/chroot_tmpdir/scmroot/jakarta-json'...
$ git fetch origin 92f17da243be16e63cb1e070fab1f7022e92f256:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/jakarta-json
 * [new ref]         92f17da243be16e63cb1e070fab1f7022e92f256 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 92f17da Rebuilt for java-21-openjdk as system jdk