$ git clone -n https://gitee.com/src-opencloudos-rpms/pcre2.git /var/lib/mock/dist-oc9-build-121297-71610/root/chroot_tmpdir/scmroot/pcre2
Cloning into '/var/lib/mock/dist-oc9-build-121297-71610/root/chroot_tmpdir/scmroot/pcre2'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/pcre2
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 62a48b8 import pcre2-10.42-6.tl4