$ git clone -n https://src.fedoraproject.org/rpms/gnome-do.git /var/lib/mock/f41-build-730773-13168/root/chroot_tmpdir/scmroot/gnome-do
Cloning into '/var/lib/mock/f41-build-730773-13168/root/chroot_tmpdir/scmroot/gnome-do'...
$ git fetch origin 58d21d4107d51933c0540c5a88901d64ac093eaf:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gnome-do
 * [new ref]         58d21d4107d51933c0540c5a88901d64ac093eaf -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 58d21d4 Eliminate use of obsolete %patchN syntax (#2283636)