$ git clone -n https://src.fedoraproject.org/rpms/rust-rav1e.git /var/lib/mock/f41-build-861564-169832/root/chroot_tmpdir/scmroot/rust-rav1e
Cloning into '/var/lib/mock/f41-build-861564-169832/root/chroot_tmpdir/scmroot/rust-rav1e'...
$ git fetch origin 9ab3eb9b2c4933f8b14e293bba5f344b5d413482:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-rav1e
 * [new ref]         9ab3eb9b2c4933f8b14e293bba5f344b5d413482 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9ab3eb9 Drop unused dump_lookahead_data feature and its dependencies