$ git clone -n https://src.fedoraproject.org/rpms/kaidan.git /var/lib/mock/f40-build-771324-125949/root/chroot_tmpdir/scmroot/kaidan
Cloning into '/var/lib/mock/f40-build-771324-125949/root/chroot_tmpdir/scmroot/kaidan'...
$ git fetch origin e599e930cee3918871a7c71f3d58df699648eca2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kaidan
 * [new ref]         e599e930cee3918871a7c71f3d58df699648eca2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e599e93 fix runtime dependency name of kquickimageeditor; fix rhbz#2253555