$ git clone -n https://src.fedoraproject.org/rpms/mingw-libtheora.git /var/lib/mock/f41-build-1544610-23938/root/chroot_tmpdir/scmroot/mingw-libtheora
Cloning into '/var/lib/mock/f41-build-1544610-23938/root/chroot_tmpdir/scmroot/mingw-libtheora'...
$ git fetch origin b3fa5db89bc4876dedf9fb0f0cef9e5dcea258e0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mingw-libtheora
 * [new ref]         b3fa5db89bc4876dedf9fb0f0cef9e5dcea258e0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b3fa5db Eliminate use of obsolete %patchN syntax (#2283636)