$ git clone -n https://gitee.com/rabbitali/libdrm.git /var/lib/mock/dist-an23-build-490840-74530/root/chroot_tmpdir/scmroot/libdrm
Cloning into '/var/lib/mock/dist-an23-build-490840-74530/root/chroot_tmpdir/scmroot/libdrm'...
$ git fetch origin b0985e56e194caa68af3345a6ee6a4b7bb831466:KOJI_FETCH_HEAD
From https://gitee.com/rabbitali/libdrm
 * [new ref]         b0985e56e194caa68af3345a6ee6a4b7bb831466 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b0985e5 Update code from upstream