$ git clone -n https://src.fedoraproject.org/rpms/vdr-skinenigmang.git /var/lib/mock/f42-build-side-1-3586052-46913/root/chroot_tmpdir/scmroot/vdr-skinenigmang
Cloning into '/var/lib/mock/f42-build-side-1-3586052-46913/root/chroot_tmpdir/scmroot/vdr-skinenigmang'...
$ git fetch origin 72dcd5dfa5699cc144097a74e71c953bb7aecaf2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/vdr-skinenigmang
 * [new ref]         72dcd5dfa5699cc144097a74e71c953bb7aecaf2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 72dcd5d Rebuilt for new VDR API version 2.7.4