$ git clone -n https://src.fedoraproject.org/rpms/vdr-femon.git /var/lib/mock/f40-build-2206628-52059/root/chroot_tmpdir/scmroot/vdr-femon
Cloning into '/var/lib/mock/f40-build-2206628-52059/root/chroot_tmpdir/scmroot/vdr-femon'...
$ git fetch origin c55f19477ee78c606f5ff9f2c22329411b0a1c4b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/vdr-femon
 * [new ref]         c55f19477ee78c606f5ff9f2c22329411b0a1c4b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c55f194 Rebuilt for new VDR API version