$ git clone -n https://github.com/xcp-ng-rpms/qemu.git /var/lib/mock/v8.3-incoming-10479-29035/root/chroot_tmpdir/scmroot/qemu
Cloning into '/var/lib/mock/v8.3-incoming-10479-29035/root/chroot_tmpdir/scmroot/qemu'...
$ git fetch origin 06c7893bf5b3792f12713a5c8eb288e0ddb7f52d:KOJI_FETCH_HEAD
From https://github.com/xcp-ng-rpms/qemu
 * [new ref]         06c7893bf5b3792f12713a5c8eb288e0ddb7f52d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 06c7893 Merge pull request #13 from xcp-ng-rpms/QC-XCPNG-2834