$ git clone -n https://src.fedoraproject.org/rpms/nogravity.git /var/lib/mock/f41-build-968835-17111/root/chroot_tmpdir/scmroot/nogravity
Cloning into '/var/lib/mock/f41-build-968835-17111/root/chroot_tmpdir/scmroot/nogravity'...
$ git fetch origin e496f77848a1d5d487c28009f650461bc44a5019:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/nogravity
 * [new ref]         e496f77848a1d5d487c28009f650461bc44a5019 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e496f77 Eliminate use of obsolete %patchN syntax (#2283636)