$ git clone -n https://github.com/xcp-ng-rpms/edk2.git /var/lib/mock/v8.3-base-3993-3931/root/chroot_tmpdir/scmroot/edk2
Cloning into '/var/lib/mock/v8.3-base-3993-3931/root/chroot_tmpdir/scmroot/edk2'...
$ git reset --hard 707a22f4f712419761c4a23eaf4cb897490361be
Downloading SOURCES/edk2-20180522git4b8552d.tar.gz (39 MB)
HEAD is now at 707a22f Merge branch 'XS-8.3'