$ git clone -n https://src.fedoraproject.org/rpms/rust-actix-http.git /var/lib/mock/f42-build-side-1-3588996-46952/root/chroot_tmpdir/scmroot/rust-actix-http
Cloning into '/var/lib/mock/f42-build-side-1-3588996-46952/root/chroot_tmpdir/scmroot/rust-actix-http'...
$ git fetch origin 45cc4f0362825e08c5247c6751ec214dc8c9fcf0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-actix-http
 * [new ref]         45cc4f0362825e08c5247c6751ec214dc8c9fcf0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 45cc4f0 Update to version 3.11.0; Fixes RHBZ#2365415