$ git clone -n https://gitee.com/sys0613/fdk-aac-free.git /var/lib/mock/dist-an8.7-build-272788-64170/root/chroot_tmpdir/scmroot/fdk-aac-free
Cloning into '/var/lib/mock/dist-an8.7-build-272788-64170/root/chroot_tmpdir/scmroot/fdk-aac-free'...
$ git fetch origin 6357f9b40ef073ab0094318ef1cb03d31ee71800:KOJI_FETCH_HEAD
From https://gitee.com/sys0613/fdk-aac-free
 * [new ref]         6357f9b40ef073ab0094318ef1cb03d31ee71800 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6357f9b Refactor the spec file