$ git clone -n https://src.fedoraproject.org/rpms/rust-signal.git /var/lib/mock/f38-build-side-42-init-devel-1268386-30643/root/chroot_tmpdir/scmroot/rust-signal
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1268386-30643/root/chroot_tmpdir/scmroot/rust-signal'...
$ git fetch origin f84a5be378c3bf00662772959f0881c9e123f1bb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-signal
 * [new ref]         f84a5be378c3bf00662772959f0881c9e123f1bb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f84a5be Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild