$ git clone -n https://src.fedoraproject.org/rpms/jssc.git /var/lib/mock/f40-build-795313-140108/root/chroot_tmpdir/scmroot/jssc
Cloning into '/var/lib/mock/f40-build-795313-140108/root/chroot_tmpdir/scmroot/jssc'...
$ git fetch origin bad96277c2d0be1ec1002a16d77893f6a9cd2980:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/jssc
 * [new ref]         bad96277c2d0be1ec1002a16d77893f6a9cd2980 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bad9627 Rebuilt for java-21-openjdk as system jdk