$ git clone -n https://src.fedoraproject.org/rpms/golang-github-btcsuite-btcd-btcec.git /var/lib/mock/f38-build-side-42-init-devel-1109350-30077/root/chroot_tmpdir/scmroot/golang-github-btcsuite-btcd-btcec
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1109350-30077/root/chroot_tmpdir/scmroot/golang-github-btcsuite-btcd-btcec'...
$ git fetch origin adfdf261320f8f649c3c6c9457396f47ed9535e4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-btcsuite-btcd-btcec
 * [new ref]         adfdf261320f8f649c3c6c9457396f47ed9535e4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at adfdf26 Added the README