$ git clone -n https://src.fedoraproject.org/rpms/zlib-ng.git /var/lib/mock/f42-build-side-1-3587377-46931/root/chroot_tmpdir/scmroot/zlib-ng
Cloning into '/var/lib/mock/f42-build-side-1-3587377-46931/root/chroot_tmpdir/scmroot/zlib-ng'...
$ git fetch origin 1c35d974a9c5bbf695dd8d2c06cd058f83289696:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/zlib-ng
 * [new ref]         1c35d974a9c5bbf695dd8d2c06cd058f83289696 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1c35d97 Remove rpmdeplint from gating