$ git clone -n https://src.fedoraproject.org/rpms/tesseract.git /var/lib/mock/f41-build-860271-168876/root/chroot_tmpdir/scmroot/tesseract
Cloning into '/var/lib/mock/f41-build-860271-168876/root/chroot_tmpdir/scmroot/tesseract'...
$ git fetch origin 85fd62953a661694f5ce9300066114b4a38cc9f0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/tesseract
 * [new ref]         85fd62953a661694f5ce9300066114b4a38cc9f0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 85fd629 Fix upgrade path for package split