$ git clone -n https://src.fedoraproject.org/rpms/vdr-screenshot.git /var/lib/mock/f41-build-1033734-18591/root/chroot_tmpdir/scmroot/vdr-screenshot
Cloning into '/var/lib/mock/f41-build-1033734-18591/root/chroot_tmpdir/scmroot/vdr-screenshot'...
$ git fetch origin eb5ac9f79a532b378fcc48508aca5c1f22e1e550:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/vdr-screenshot
 * [new ref]         eb5ac9f79a532b378fcc48508aca5c1f22e1e550 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at eb5ac9f convert GPL+ license to SPDX