$ git clone -n https://src.fedoraproject.org/rpms/loupe.git /var/lib/mock/f40-build-2424681-60597/root/chroot_tmpdir/scmroot/loupe
Cloning into '/var/lib/mock/f40-build-2424681-60597/root/chroot_tmpdir/scmroot/loupe'...
$ git fetch origin e484780324c8c86e9a9c65d0696447e35417899c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/loupe
 * [new ref]         e484780324c8c86e9a9c65d0696447e35417899c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e484780 Update Rust macro usage