$ git clone -n https://src.fedoraproject.org/rpms/vdirsyncer.git /var/lib/mock/f41-build-side-1-2778970-32451/root/chroot_tmpdir/scmroot/vdirsyncer
Cloning into '/var/lib/mock/f41-build-side-1-2778970-32451/root/chroot_tmpdir/scmroot/vdirsyncer'...
$ git fetch origin f592c241cfef9e15c8e32e32301ff216fa920da1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/vdirsyncer
 * [new ref]         f592c241cfef9e15c8e32e32301ff216fa920da1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f592c24 convert license to SPDX