$ git clone -n https://src.fedoraproject.org/rpms/opensc.git /var/lib/mock/f40-build-2704097-70922/root/chroot_tmpdir/scmroot/opensc
Cloning into '/var/lib/mock/f40-build-2704097-70922/root/chroot_tmpdir/scmroot/opensc'...
$ git fetch origin 816c498d1bcc057660627ac5d253b741c784484d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/opensc
 * [new ref]         816c498d1bcc057660627ac5d253b741c784484d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 816c498 Fix buil after bash-completion repackaging