$ git clone -n https://src.fedoraproject.org/rpms/rust-cargo-vendor-filterer.git /var/lib/mock/f41-build-861522-169814/root/chroot_tmpdir/scmroot/rust-cargo-vendor-filterer
Cloning into '/var/lib/mock/f41-build-861522-169814/root/chroot_tmpdir/scmroot/rust-cargo-vendor-filterer'...
$ git fetch origin e6a04438eb48076cf25c2e2c30bb901f42fc6369:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-cargo-vendor-filterer
 * [new ref]         e6a04438eb48076cf25c2e2c30bb901f42fc6369 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e6a0443 Update to 0.5.16