$ git clone -n https://src.fedoraproject.org/rpms/desktop-file-utils.git /var/lib/mock/f41-build-823884-153914/root/chroot_tmpdir/scmroot/desktop-file-utils
Cloning into '/var/lib/mock/f41-build-823884-153914/root/chroot_tmpdir/scmroot/desktop-file-utils'...
$ git fetch origin c6a3da2f5267bc73f6b2065a32017b223570ab6b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/desktop-file-utils
 * [new ref]         c6a3da2f5267bc73f6b2065a32017b223570ab6b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c6a3da2 patch: add cosmic category patch