$ git clone -n https://src.fedoraproject.org/rpms/rust-actix-macros.git /var/lib/mock/f45-build-39800-757/root/chroot_tmpdir/scmroot/rust-actix-macros
Cloning into '/var/lib/mock/f45-build-39800-757/root/chroot_tmpdir/scmroot/rust-actix-macros'...
$ git fetch origin db0b05de964bbaadb2279c9b8d88f626f19def31:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-actix-macros
 * [new ref]         db0b05de964bbaadb2279c9b8d88f626f19def31 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at db0b05d Regenerate with rust2rpm v28