$ git clone -n https://src.fedoraproject.org/rpms/baresip.git /var/lib/mock/f40-build-792504-138440/root/chroot_tmpdir/scmroot/baresip
Cloning into '/var/lib/mock/f40-build-792504-138440/root/chroot_tmpdir/scmroot/baresip'...
$ git fetch origin 34bade78f177fc295592ca922d1c69eae971fd4a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/baresip
 * [new ref]         34bade78f177fc295592ca922d1c69eae971fd4a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 34bade7 Rebuild for libvpx 1.14.x