$ git clone -n https://src.fedoraproject.org/rpms/yakuake.git /var/lib/mock/f40-build-1835673-24951/root/chroot_tmpdir/scmroot/yakuake
Cloning into '/var/lib/mock/f40-build-1835673-24951/root/chroot_tmpdir/scmroot/yakuake'...
$ git fetch origin 77a9759c6d650d976cb9da5ec50c55a2758d1d8d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/yakuake
 * [new ref]         77a9759c6d650d976cb9da5ec50c55a2758d1d8d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 77a9759 Merge branch 'rawhide' into f40