$ git clone -n https://src.fedoraproject.org/rpms/pdf2djvu.git /var/lib/mock/f41-build-815487-149534/root/chroot_tmpdir/scmroot/pdf2djvu
Cloning into '/var/lib/mock/f41-build-815487-149534/root/chroot_tmpdir/scmroot/pdf2djvu'...
$ git fetch origin 8b852b11be379889b96f17ab5c2e6aef89b312a0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/pdf2djvu
 * [new ref]         8b852b11be379889b96f17ab5c2e6aef89b312a0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8b852b1 Rebuilt for exiv2 0.28.2