$ git clone -n https://gitee.com/zxy19951122/PyYAML.git /var/lib/mock/dist-an23-build-293656-65178/root/chroot_tmpdir/scmroot/PyYAML
Cloning into '/var/lib/mock/dist-an23-build-293656-65178/root/chroot_tmpdir/scmroot/PyYAML'...
$ git fetch origin d2d7682f3b832689e92577df8cea1b898c2a51aa:KOJI_FETCH_HEAD
From https://gitee.com/zxy19951122/PyYAML
 * [new ref]         d2d7682f3b832689e92577df8cea1b898c2a51aa -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d2d7682 import PyYAML-3.12-12.el8.src.rpm