$ git clone -n https://src.fedoraproject.org/rpms/tesseract.git /var/lib/mock/f40-build-780174-130698/root/chroot_tmpdir/scmroot/tesseract
Cloning into '/var/lib/mock/f40-build-780174-130698/root/chroot_tmpdir/scmroot/tesseract'...
$ git fetch origin 5da51a1eda7e2a775b7da5c83e48c40a2325e0ff:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/tesseract
 * [new ref]         5da51a1eda7e2a775b7da5c83e48c40a2325e0ff -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5da51a1 Rebuild (icu)