$ git clone -n https://src.fedoraproject.org/rpms/rust-actix-server.git /var/lib/mock/f40-build-2143407-50854/root/chroot_tmpdir/scmroot/rust-actix-server
Cloning into '/var/lib/mock/f40-build-2143407-50854/root/chroot_tmpdir/scmroot/rust-actix-server'...
$ git fetch origin e34381b17557c0b77556027e049ecd04f35aac6d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-actix-server
 * [new ref]         e34381b17557c0b77556027e049ecd04f35aac6d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e34381b Update to version 2.3.0; Fixes RHBZ#2235115