$ git clone -n https://src.fedoraproject.org/rpms/rust-quinn-proto /var/lib/mock/f42-build-3453364-45488/root/chroot_tmpdir/scmroot/rust-quinn-proto
Cloning into '/var/lib/mock/f42-build-3453364-45488/root/chroot_tmpdir/scmroot/rust-quinn-proto'...
$ git fetch origin 94954fe6743fe53023d2e14ac570ebb2f22cb44f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-quinn-proto
 * [new ref]         94954fe6743fe53023d2e14ac570ebb2f22cb44f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 94954fe Update to version 0.11.10; Fixes RHBZ#2353151