$ git clone -n https://src.fedoraproject.org/rpms/R-tesseract.git /var/lib/mock/f40-build-1514423-23911/root/chroot_tmpdir/scmroot/R-tesseract
Cloning into '/var/lib/mock/f40-build-1514423-23911/root/chroot_tmpdir/scmroot/R-tesseract'...
$ git fetch origin 56705ed196cf56d0ecc2bfaf68347f9010a5fc98:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-tesseract
 * [new ref]         56705ed196cf56d0ecc2bfaf68347f9010a5fc98 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 56705ed R-maint-sig mass rebuild