$ git clone -n https://src.fedoraproject.org/rpms/libb64.git /var/lib/mock/f40-build-785170-133815/root/chroot_tmpdir/scmroot/libb64
Cloning into '/var/lib/mock/f40-build-785170-133815/root/chroot_tmpdir/scmroot/libb64'...
$ git reset --hard ef057b7f91e77f60cbaa7e5b87d7451b4444efb5
HEAD is now at ef057b7 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild