$ git clone -n https://src.fedoraproject.org/rpms/t1lib.git /var/lib/mock/f41-build-1041885-18994/root/chroot_tmpdir/scmroot/t1lib
Cloning into '/var/lib/mock/f41-build-1041885-18994/root/chroot_tmpdir/scmroot/t1lib'...
$ git fetch origin ef46873fe34296426b8f12edf536fc460025659c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/t1lib
 * [new ref]         ef46873fe34296426b8f12edf536fc460025659c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ef46873 Eliminate use of obsolete %patchN syntax (#2283636)