$ git clone -n https://gitee.com/src-opencloudos-rpms/poppler.git /var/lib/mock/dist-oc8-build-74209-49705/root/chroot_tmpdir/scmroot/poppler
Cloning into '/var/lib/mock/dist-oc8-build-74209-49705/root/chroot_tmpdir/scmroot/poppler'...
$ git fetch origin d797bbacf8aa120564c691b0e5615a1484f289d3:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/poppler
 * [new ref]         d797bbacf8aa120564c691b0e5615a1484f289d3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d797bba import poppler-20.11.0-11.tl3