$ git clone -n https://src.fedoraproject.org/rpms/rust-actix-http.git /var/lib/mock/f40-build-1882976-25042/root/chroot_tmpdir/scmroot/rust-actix-http
Cloning into '/var/lib/mock/f40-build-1882976-25042/root/chroot_tmpdir/scmroot/rust-actix-http'...
$ git fetch origin a7511da942ec86307f77b52df7c7d5e9efc7ad12:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-actix-http
 * [new ref]         a7511da942ec86307f77b52df7c7d5e9efc7ad12 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a7511da Update to version 3.8.0; Fixes RHBZ#2281480