$ git clone -n https://gitee.com/mgb01105731/libpng.git /var/lib/mock/dist-an23.3-build-415645-72844/root/chroot_tmpdir/scmroot/libpng
Cloning into '/var/lib/mock/dist-an23.3-build-415645-72844/root/chroot_tmpdir/scmroot/libpng'...
$ git fetch origin e2e152a2083033e4f65b0b038598d9c0ec60538b:KOJI_FETCH_HEAD
From https://gitee.com/mgb01105731/libpng
 * [new ref]         e2e152a2083033e4f65b0b038598d9c0ec60538b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e2e152a Refer to CentOS Stream libpng-1.6.40-1(tdawson@redhat.com)