$ git clone -n https://src.fedoraproject.org/rpms/gnome-valgrind-session.git /var/lib/mock/f41-build-696632-12816/root/chroot_tmpdir/scmroot/gnome-valgrind-session
Cloning into '/var/lib/mock/f41-build-696632-12816/root/chroot_tmpdir/scmroot/gnome-valgrind-session'...
$ git fetch origin 698aa1e003765e6ca3200836ea3d97cecec44aab:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gnome-valgrind-session
 * [new ref]         698aa1e003765e6ca3200836ea3d97cecec44aab -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 698aa1e Eliminate use of obsolete %patchN syntax (#2283636)