$ git clone -n https://gitee.com/mgb01105731/libpng15.git /var/lib/mock/dist-an23-build-522037-76293/root/chroot_tmpdir/scmroot/libpng15
Cloning into '/var/lib/mock/dist-an23-build-522037-76293/root/chroot_tmpdir/scmroot/libpng15'...
$ git fetch origin 4783e62063863709d5fe1f74003db6a49de4836c:KOJI_FETCH_HEAD
From https://gitee.com/mgb01105731/libpng15
 * [new ref]         4783e62063863709d5fe1f74003db6a49de4836c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4783e62 Init