$ git clone -n https://src.fedoraproject.org/rpms/tesseract.git /var/lib/mock/f40-build-2225049-52804/root/chroot_tmpdir/scmroot/tesseract
Cloning into '/var/lib/mock/f40-build-2225049-52804/root/chroot_tmpdir/scmroot/tesseract'...
$ git fetch origin c2c0cf5459b39276100b7d5f7a5881f9e6ee69d6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/tesseract
 * [new ref]         c2c0cf5459b39276100b7d5f7a5881f9e6ee69d6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c2c0cf5 Update to 5.3.3