$ git clone -n https://src.fedoraproject.org/rpms/icestorm.git /var/lib/mock/f37-build-676129-76070/root/chroot_tmpdir/scmroot/icestorm
Cloning into '/var/lib/mock/f37-build-676129-76070/root/chroot_tmpdir/scmroot/icestorm'...
$ git reset --hard 0b468ffa2ff454fd28db43617e1d77446a438c38
HEAD is now at 0b468ff Update to newer snapshot