$ git clone -n https://src.fedoraproject.org/rpms/rust-actix.git /var/lib/mock/f40-build-2099804-50441/root/chroot_tmpdir/scmroot/rust-actix
Cloning into '/var/lib/mock/f40-build-2099804-50441/root/chroot_tmpdir/scmroot/rust-actix'...
$ git fetch origin 606e624b8aa641dd0e6be96ccda47146a5ec1eab:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-actix
 * [new ref]         606e624b8aa641dd0e6be96ccda47146a5ec1eab -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 606e624 Update to version 0.13.1; Fixes RHBZ#2236179