$ git clone -n https://src.fedoraproject.org/rpms/lrzsz.git /var/lib/mock/f41-build-1029186-18375/root/chroot_tmpdir/scmroot/lrzsz
Cloning into '/var/lib/mock/f41-build-1029186-18375/root/chroot_tmpdir/scmroot/lrzsz'...
$ git fetch origin 64ec4bf04b8edcb121674c36b89c3999d017a875:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/lrzsz
 * [new ref]         64ec4bf04b8edcb121674c36b89c3999d017a875 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 64ec4bf Eliminate use of obsolete %patchN syntax (#2283636)