$ git clone -n https://src.fedoraproject.org/rpms/yakuake.git /var/lib/mock/f45-build-39200-732/root/chroot_tmpdir/scmroot/yakuake
Cloning into '/var/lib/mock/f45-build-39200-732/root/chroot_tmpdir/scmroot/yakuake'...
$ git fetch origin 5664111ccbbdeb532c15f418984b14437af0fe98:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/yakuake
 * [new ref]         5664111ccbbdeb532c15f418984b14437af0fe98 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5664111 26.08.1