$ git clone -n https://src.fedoraproject.org/rpms/auryn.git /var/lib/mock/f38-build-side-42-init-devel-1323450-30692/root/chroot_tmpdir/scmroot/auryn
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1323450-30692/root/chroot_tmpdir/scmroot/auryn'...
$ git fetch origin eb0f70bf81f3fe6902c68b2c5e3d752b266a507c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/auryn
 * [new ref]         eb0f70bf81f3fe6902c68b2c5e3d752b266a507c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at eb0f70b Leaf package: drop ix86 support