$ git clone -n https://src.fedoraproject.org/rpms/libsigc++.git /var/lib/mock/f33-build-127380-40251/root/chroot_tmpdir/scmroot/libsigc++
Cloning into '/var/lib/mock/f33-build-127380-40251/root/chroot_tmpdir/scmroot/libsigc++'...
$ git reset --hard 6fa7a09973d845e328c94e4fd3fead004f5247f6
HEAD is now at 6fa7a09 - Rebuilt for https://fedoraproject.org/wiki/Fedora_32_Mass_Rebuild