$ git clone -n https://src.fedoraproject.org/rpms/milia.git /var/lib/mock/f41-build-1022364-18070/root/chroot_tmpdir/scmroot/milia
Cloning into '/var/lib/mock/f41-build-1022364-18070/root/chroot_tmpdir/scmroot/milia'...
$ git fetch origin eca94beb023045792a62bc33c1920a9415fd10b6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/milia
 * [new ref]         eca94beb023045792a62bc33c1920a9415fd10b6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at eca94be Eliminate use of obsolete %patchN syntax (#2283636)