$ git clone -n https://src.fedoraproject.org/rpms/libsigc++20.git /var/lib/mock/f37-build-650339-72753/root/chroot_tmpdir/scmroot/libsigc++20
Cloning into '/var/lib/mock/f37-build-650339-72753/root/chroot_tmpdir/scmroot/libsigc++20'...
$ git reset --hard 2a9b3c9ef10c311f0621c4e69e7f197f8b133059
HEAD is now at 2a9b3c9 Rebuilt for https://fedoraproject.org/wiki/Fedora_37_Mass_Rebuild