$ git clone -n https://src.fedoraproject.org/rpms/rust-quinn-proto.git /var/lib/mock/f41-build-side-1-2902645-34658/root/chroot_tmpdir/scmroot/rust-quinn-proto
Cloning into '/var/lib/mock/f41-build-side-1-2902645-34658/root/chroot_tmpdir/scmroot/rust-quinn-proto'...
$ git fetch origin 33cb3ec401554dd79969291be91e620c7edb5be2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-quinn-proto
 * [new ref]         33cb3ec401554dd79969291be91e620c7edb5be2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 33cb3ec Update to version 0.11.8; Fixes RHBZ#2279407