$ git clone -n https://gitee.com/src-anolis-os/pcre.git /var/lib/mock/dist-an23-build-189202-60731/root/chroot_tmpdir/scmroot/pcre
Cloning into '/var/lib/mock/dist-an23-build-189202-60731/root/chroot_tmpdir/scmroot/pcre'...
$ git fetch origin a23:KOJI_FETCH_HEAD
From https://gitee.com/src-anolis-os/pcre
 * [new branch]      a23        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at db3359f optimise spec file and correct abi-related files