$ git clone -n https://src.fedoraproject.org/rpms/gkrellm.git /var/lib/mock/f40-build-795783-140317/root/chroot_tmpdir/scmroot/gkrellm
Cloning into '/var/lib/mock/f40-build-795783-140317/root/chroot_tmpdir/scmroot/gkrellm'...
$ git fetch origin 7ec65a5e2a57463751eea6d0f809db1bd6cfe074:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gkrellm
 * [new ref]         7ec65a5e2a57463751eea6d0f809db1bd6cfe074 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7ec65a5 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild