$ git clone -n https://src.fedoraproject.org/rpms/dvdbackup.git /var/lib/mock/f41-build-1018508-17947/root/chroot_tmpdir/scmroot/dvdbackup
Cloning into '/var/lib/mock/f41-build-1018508-17947/root/chroot_tmpdir/scmroot/dvdbackup'...
$ git fetch origin ef18f81e4c77fb69e829bd0ce045f13d1ea54eb5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/dvdbackup
 * [new ref]         ef18f81e4c77fb69e829bd0ce045f13d1ea54eb5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ef18f81 Eliminate use of obsolete %patchN syntax (#2283636)