$ git clone -n https://src.fedoraproject.org/rpms/golang-github-hailocab-hostpool.git /var/lib/mock/f40-build-2236378-53509/root/chroot_tmpdir/scmroot/golang-github-hailocab-hostpool
Cloning into '/var/lib/mock/f40-build-2236378-53509/root/chroot_tmpdir/scmroot/golang-github-hailocab-hostpool'...
$ git fetch origin f7bbc10c260caa9b1a968f98f4230a30de1803f0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-hailocab-hostpool
 * [new ref]         f7bbc10c260caa9b1a968f98f4230a30de1803f0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f7bbc10 Remove deprecated %patchN syntax