$ git clone -n https://src.fedoraproject.org/rpms/stomppy.git /var/lib/mock/f40-build-2713401-72136/root/chroot_tmpdir/scmroot/stomppy
Cloning into '/var/lib/mock/f40-build-2713401-72136/root/chroot_tmpdir/scmroot/stomppy'...
$ git fetch origin 8721be41e5bfbe06d2cc814124fa9a7d79c07a9d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/stomppy
 * [new ref]         8721be41e5bfbe06d2cc814124fa9a7d79c07a9d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8721be4 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild