$ git clone -n https://src.fedoraproject.org/rpms/xen.git /var/lib/mock/f40-build-755518-118249/root/chroot_tmpdir/scmroot/xen
Cloning into '/var/lib/mock/f40-build-755518-118249/root/chroot_tmpdir/scmroot/xen'...
$ git reset --hard b5231bddba35ce2daf5df35532b14017b3cda8a2
HEAD is now at b5231bd 2 security issues