$ git clone -n https://src.fedoraproject.org/rpms/vdr-osd2web.git /var/lib/mock/f40-build-1898229-25068/root/chroot_tmpdir/scmroot/vdr-osd2web
Cloning into '/var/lib/mock/f40-build-1898229-25068/root/chroot_tmpdir/scmroot/vdr-osd2web'...
$ git fetch origin 8ffebd1aed2b003e92ede7b729eb658f244d45fb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/vdr-osd2web
 * [new ref]         8ffebd1aed2b003e92ede7b729eb658f244d45fb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8ffebd1 Rebuilt for new VDR API version 2.6.9