$ git clone -n https://src.fedoraproject.org/rpms/rust-atk0.17.git /var/lib/mock/f40-build-2136851-50815/root/chroot_tmpdir/scmroot/rust-atk0.17
Cloning into '/var/lib/mock/f40-build-2136851-50815/root/chroot_tmpdir/scmroot/rust-atk0.17'...
$ git fetch origin 3a92e8c534160f52053ea5ad83002c3b6239bd69:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-atk0.17
 * [new ref]         3a92e8c534160f52053ea5ad83002c3b6239bd69 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3a92e8c Initial import (atk 0.17 compat package)