$ git clone -n https://src.fedoraproject.org/rpms/golang-github-nkovacs-streamquote.git /var/lib/mock/f39-build-1513096-35589/root/chroot_tmpdir/scmroot/golang-github-nkovacs-streamquote
Cloning into '/var/lib/mock/f39-build-1513096-35589/root/chroot_tmpdir/scmroot/golang-github-nkovacs-streamquote'...
$ git fetch origin f600eb476e1cdf5ed260cdd29bb8d31c105d43f3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-nkovacs-streamquote
 * [new ref]         f600eb476e1cdf5ed260cdd29bb8d31c105d43f3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f600eb4 Fix FTBFS