$ git clone -n https://github.com/xcp-ng-rpms/xapi.git /var/lib/mock/v8.3-u-gtn2-8279-24467/root/chroot_tmpdir/scmroot/xapi
Cloning into '/var/lib/mock/v8.3-u-gtn2-8279-24467/root/chroot_tmpdir/scmroot/xapi'...
$ git reset --hard 166ed5208740002ca5231d8eda893751266b00af
fatal: Could not parse object '166ed5208740002ca5231d8eda893751266b00af'.