$ git clone -n https://src.fedoraproject.org/rpms/reposurgeon.git /var/lib/mock/f33-build-459570-63640/root/chroot_tmpdir/scmroot/reposurgeon
Cloning into '/var/lib/mock/f33-build-459570-63640/root/chroot_tmpdir/scmroot/reposurgeon'...
$ git reset --hard c9356570e6413e1382028817dea1642ed3d5b451
HEAD is now at c935657 reposurgeon: 4.21 release