$ git clone -n https://src.fedoraproject.org/rpms/ruff.git /var/lib/mock/f42-build-side-1-3588974-46952/root/chroot_tmpdir/scmroot/ruff
Cloning into '/var/lib/mock/f42-build-side-1-3588974-46952/root/chroot_tmpdir/scmroot/ruff'...
$ git fetch origin 54168330588bf81fc0234d31337602b4e0180508:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ruff
 * [new ref]         54168330588bf81fc0234d31337602b4e0180508 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5416833 Stop patching for hashbrown/hashlink 0.14/0.9; use 0.15/0.10