$ git clone -n https://src.fedoraproject.org/rpms/libestr.git /var/lib/mock/f31-build-99407-33157/root/chroot_tmpdir/scmroot/libestr
Cloning into '/var/lib/mock/f31-build-99407-33157/root/chroot_tmpdir/scmroot/libestr'...
$ git reset --hard 0f8acdf500f8183780626dbe1dd2da3b090237ba
HEAD is now at 0f8acdf - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild