$ git clone -n https://src.fedoraproject.org/rpms/erlang-js.git /var/lib/mock/f39-build-1708978-41223/root/chroot_tmpdir/scmroot/erlang-js
Cloning into '/var/lib/mock/f39-build-1708978-41223/root/chroot_tmpdir/scmroot/erlang-js'...
$ git fetch origin 84f0e60462609bfded0fa13a8e624795493a96d4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/erlang-js
 * [new ref]         84f0e60462609bfded0fa13a8e624795493a96d4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 84f0e60 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild